Obeka, Splitter of Seconds - Built around As Foretold, Dragonmaster Outcast and Twilight Prophet

Dragonmaster Outcast

Creature — Human Shaman

$0.35

At the beginning of your upkeep, if you control six or more lands, create a 5/5 red Dragon creature token with flying.

Twilight Prophet

Creature — Vampire Cleric

$1.97

Flying Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) At the beginning of your upkeep, if you have the city's blessing, reveal the top card of your library and put it into your hand. Each opponent loses X life and you gain X life, where X is that card's mana value.

Creeping Bloodsucker

Creature — Vampire

$4.82

At the beginning of your upkeep, this creature deals 1 damage to each opponent. You gain life equal to the damage dealt this way.

Rilsa Rael, Kingpin

Legendary Creature — Human Rogue

$0.1

Deathtouch When Rilsa Rael enters, you take the initiative. Whenever you attack, target attacking creature gains deathtouch until end of turn. If you've completed a dungeon, that creature also gets +5/+0 and gains first strike and menace until end of turn.

Chronozoa

Creature — Illusion

$6.75

Flying Vanishing 3 (This creature enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.) When this creature dies, if it had no time counters on it, create two tokens that are copies of it.

Stirring Bard

Creature — Dragon Bard

$0.27

Defender When this creature enters, you take the initiative. Mantle of Inspiration — {T}: Target creature gains menace and haste until end of turn.

Skyline Despot

Creature — Dragon

$0.41

Flying When this creature enters, you become the monarch. At the beginning of your upkeep, if you're the monarch, create a 5/5 red Dragon creature token with flying.

Caves of Chaos Adventurer

Creature — Human Barbarian

$0.38

Trample When this creature enters, you take the initiative. Whenever this creature attacks, exile the top card of your library. If you've completed a dungeon, you may play that card this turn without paying its mana cost. Otherwise, you may play that card this turn.

Vicious Battlerager

Creature — Dwarf Barbarian

$0.17

When this creature enters, you take the initiative. Spiked Retribution — Whenever this creature becomes blocked by a creature, that creature's controller loses 5 life.

Aarakocra Sneak

Creature — Bird Rogue

$0.11

Flying When this creature enters, you take the initiative.

Plargg and Nassari

Legendary Creature — Orc Efreet

$0.34

At the beginning of your upkeep, each player exiles cards from the top of their library until they exile a nonland card. An opponent chooses a nonland card exiled this way. You may cast up to two spells from among the other cards exiled this way without paying their mana costs.

Nightscape Familiar

Creature — Zombie

$0.41

Blue spells and red spells you cast cost {1} less to cast. {1}{B}: Regenerate this creature.

Jhoira of the Ghitu

Legendary Creature — Human Wizard

$0.28

{2}, Exile a nonland card from your hand: Put four time counters on the exiled card. If it doesn't have suspend, it gains suspend. (At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. If it's a creature, it has haste.)

Indulgent Tormentor

Creature — Demon

$0.31

Flying At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature of their choice or pays 3 life.

Thassa, God of the Sea

Legendary Enchantment Creature — God

$4.4

Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) At the beginning of your upkeep, scry 1. {1}{U}: Target creature you control can't be blocked this turn.

Silent Arbiter

Artifact Creature — Construct

$10.68

No more than one creature can attack each combat. No more than one creature can block each combat.

Lizard Blades

Artifact Creature — Equipment Lizard

$2.91

Double strike Equipped creature has double strike. Reconfigure {2} ({2}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Braids, Conjurer Adept

Legendary Creature — Human Wizard

$0.4

At the beginning of each player's upkeep, that player may put an artifact, creature, or land card from their hand onto the battlefield.

Generous Plunderer

Creature — Human Rogue

$16.73

Menace At the beginning of your upkeep, you may create a Treasure token. When you do, target opponent creates a tapped Treasure token. Whenever this creature attacks, it deals damage to defending player equal to the number of artifacts they control.

Bonehoard Dracosaur

Creature — Dinosaur Dragon

$15.85

Flying, first strike At the beginning of your upkeep, exile the top two cards of your library. You may play them this turn. If you exiled a land card this way, create a 3/1 red Dinosaur creature token. If you exiled a nonland card this way, create a Treasure token.

Scrawling Crawler

Artifact Creature — Phyrexian Construct

$3.43

At the beginning of your upkeep, each player draws a card. Whenever an opponent draws a card, that player loses 1 life.

Laughing Jasper Flint

Legendary Creature — Lizard Rogue

$0.39

Creatures you control but don't own are Mercenaries in addition to their other types. At the beginning of your upkeep, exile the top X cards of target opponent's library, where X is the number of outlaws you control. Until end of turn, you may cast spells from among those cards, and mana of any type can be spent to cast those spells.

Sphinx of the Second Sun

Creature — Sphinx

$2.98

Flying At the beginning of each of your postcombat main phases, there is an additional beginning phase after this phase. (The beginning phase includes the untap, upkeep, and draw steps.)

Star Whale

Creature — Alien Whale

$2.11

Flying, vigilance Other creatures you control have ward {2}. Suspend 6—{1}{U} (Rather than cast this card from your hand, you may pay {1}{U} and exile it with six time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)

Alexios, Deimos of Kosmos

Legendary Creature — Human Berserker

$0.32

Trample Alexios attacks each combat if able, can't be sacrificed, and can't attack its owner. At the beginning of each player's upkeep, that player gains control of Alexios, untaps it, and puts a +1/+1 counter on it. It gains haste until end of turn.

The Ninth Doctor

Legendary Creature — Time Lord Doctor

$0.38

Haste Into the TARDIS — Whenever The Ninth Doctor becomes untapped during your untap step, you get an additional upkeep step after this step.

Sheoldred, Whispering One

Legendary Creature — Phyrexian Praetor

$19.1

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) At the beginning of your upkeep, return target creature card from your graveyard to the battlefield. At the beginning of each opponent's upkeep, that player sacrifices a creature of their choice.

Stormfist Crusader

Creature — Human Knight

$0.38

Menace At the beginning of your upkeep, each player draws a card and loses 1 life.

Herald of Leshrac

Creature — Avatar

$5.58

Flying Cumulative upkeep—Gain control of a land you don't control. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) This creature gets +1/+1 for each land you control but don't own. When this creature leaves the battlefield, each player gains control of each land they own that you control.

Keeper of Keys

Creature — Human Rogue Mutant

$4.14

When this creature enters, you become the monarch. At the beginning of your upkeep, if you're the monarch, creatures you control can't be blocked this turn.

Magmatic Force

Creature — Elemental

$0.36

At the beginning of each upkeep, this creature deals 3 damage to any target.

Dominus of Fealty

Creature — Spirit Avatar

$0.72

Flying At the beginning of your upkeep, you may gain control of target permanent until end of turn. If you do, untap it and it gains haste until end of turn.

Sinister Concierge

Creature — Human Wizard

$1.05

When this creature dies, you may exile it and put three time counters on it. If you do, exile up to one target creature and put three time counters on it. Each card exiled this way that doesn't have suspend gains suspend. (For each card with suspend, its owner removes a time counter from it at the beginning of their upkeep. When the last is removed, they may cast it without paying its mana cost. Those creature spells have haste.)

Solemn Simulacrum

Artifact Creature — Golem

$0.28

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When this creature dies, you may draw a card.

Counterspell

Instant

$1.33

Counter target spell.

Suspended Sentence

Instant

$0.63

Destroy target creature an opponent controls. That player loses 3 life. Exile Suspended Sentence with three time counters on it. Suspend 3—{1}{B} (Rather than cast this card from your hand, you may pay {1}{B} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

Chaos Warp

Instant

$0.31

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

An Offer You Can't Refuse

Instant

$3.05

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Terminate

Instant

$0.28

Destroy target creature. It can't be regenerated.

Negate

Instant

$0.16

Counter target noncreature spell.

Cyclonic Rift

Instant

$30.1

Return target nonland permanent you don't control to its owner's hand. Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Dark Ritual

Instant

$0.44

Add {B}{B}{B}.

Rousing Refrain

Sorcery

$0.37

Add {R} for each card in target opponent's hand. Until end of turn, you don't lose this mana as steps and phases end. Exile Rousing Refrain with three time counters on it. Suspend 3—{1}{R} (Rather than cast this card from your hand, you may pay {1}{R} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

Blasphemous Act

Sorcery

$0.72

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

Toxic Deluge

Sorcery

$5.15

As an additional cost to cast this spell, pay X life. All creatures get -X/-X until end of turn.

Jeska's Will

Sorcery

$39.22

Choose one. If you control a commander as you cast this spell, you may choose both instead. • Add {R} for each card in target opponent's hand. • Exile the top three cards of your library. You may play them this turn.

Ring of Valkas

Artifact — Equipment

$0.41

Equipped creature has haste. (It can attack and {T} no matter when it came under your control.) At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's red. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Swiftfoot Boots

Artifact — Equipment

$1.43

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.) Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Ring of Evos Isle

Artifact — Equipment

$0.36

{2}: Equipped creature gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.) At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's blue. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Ring of Xathrid

Artifact — Equipment

$0.53

{2}: Regenerate equipped creature. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.) At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's black. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Vorrac Battlehorns

Artifact — Equipment

$1.6

Equipped creature has trample and can't be blocked by more than one creature. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Wayfarer's Bauble

Artifact

$0.31

{2}, {T}, Sacrifice this artifact: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Arcane Signet

Artifact

$0.38

{T}: Add one mana of any color in your commander's color identity.

Sol Ring

Artifact

$1.02

{T}: Add {C}{C}.

As Foretold

Enchantment

$1.29

At the beginning of your upkeep, put a time counter on this enchantment. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on this enchantment.

Court of Ire

Enchantment

$0.37

When this enchantment enters, you become the monarch. At the beginning of your upkeep, this enchantment deals 2 damage to any target. If you're the monarch, it deals 7 damage instead.

Court of Ambition

Enchantment

$6.49

When this enchantment enters, you become the monarch. At the beginning of your upkeep, each opponent loses 3 life unless they discard a card. If you're the monarch, instead each opponent loses 6 life unless they discard two cards.

Court of Embereth

Enchantment

$5.4

When this enchantment enters, you become the monarch. At the beginning of your upkeep, create a 3/1 red Knight creature token. Then if you're the monarch, this enchantment deals X damage to each opponent, where X is the number of creatures you control.

Court of Vantress

Enchantment

$5.12

When this enchantment enters, you become the monarch. At the beginning of your upkeep, choose up to one other target enchantment or artifact. If you're the monarch, you may create a token that's a copy of it. If you're not the monarch, you may have this enchantment become a copy of it, except it has this ability.

Descent into Avernus

Enchantment

$13.2

At the beginning of your upkeep, put two descent counters on this enchantment. Then each player creates X Treasure tokens and this enchantment deals X damage to each player, where X is the number of descent counters on this enchantment.

Braid of Fire

Enchantment

$19

Cumulative upkeep—Add {R}. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Rogue's Passage

Land

$0.29

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

Reliquary Tower

Land

$4.19

You have no maximum hand size. {T}: Add {C}.

Bojuka Bog

Land

$0.99

This land enters tapped. When this land enters, exile target player's graveyard. {T}: Add {B}.

Access Tunnel

Land

$0.32

{T}: Add {C}. {3}, {T}: Target creature with power 3 or less can't be blocked this turn.

Minas Morgul, Dark Fortress

Legendary Land

$14.39

Minas Morgul enters tapped. {T}: Add {B}. {3}{B}, {T}: Put a shadow counter on target creature. For as long as that creature has a shadow counter on it, it's a Wraith in addition to its other types. (A creature with shadow can block or be blocked by only creatures with shadow.)

The Black Gate

Legendary Land — Gate

$9.36

As The Black Gate enters, you may pay 3 life. If you don't, it enters tapped. {T}: Add {B}. {1}{B}, {T}: Choose a player with the most life or tied for most life. Target creature can't be blocked by creatures that player controls this turn.

Arena of Glory

Land

$7.63

This land enters tapped unless you control a Mountain. {T}: Add {R}. {R}, {T}, Exert this land: Add {R}{R}. If any of that mana is spent on a creature spell, it gains haste until end of turn. (An exerted permanent won't untap during your next untap step.)

Inventors' Fair

Legendary Land

$14.54

At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life. {T}: Add {C}. {4}, {T}, Sacrifice Inventors' Fair: Search your library for an artifact card, reveal it, put it into your hand, then shuffle. Activate only if you control three or more artifacts.

Command Beacon

Land

$8.34

{T}: Add {C}. {T}, Sacrifice this land: Put your commander into your hand from the command zone.

Mistrise Village

Land

$7.41

This land enters tapped unless you control a Mountain or a Forest. {T}: Add {U}. {U}, {T}: The next spell you cast this turn can't be countered.

Command Tower

Land

$0.24

{T}: Add one mana of any color in your commander's color identity.

Sulfur Falls

Land

$0.25

This land enters tapped unless you control an Island or a Mountain. {T}: Add {U} or {R}.

Crumbling Necropolis

Land

$0.3

This land enters tapped. {T}: Add {U}, {B}, or {R}.

Exotic Orchard

Land

$0.17

{T}: Add one mana of any color that a land an opponent controls could produce.

Dragonskull Summit

Land

$0.44

This land enters tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}.

Drowned Catacomb

Land

$0.47

This land enters tapped unless you control an Island or a Swamp. {T}: Add {U} or {B}.

Xander's Lounge

Land — Island Swamp Mountain

$13.84

({T}: Add {U}, {B}, or {R}.) This land enters tapped. Cycling {3} ({3}, Discard this card: Draw a card.)

Watery Grave

Land — Island Swamp

$9.85

({T}: Add {U} or {B}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.