Rex, Cyber-Hound
Whenever Rex deals combat damage to a player, they mill two cards and you get {E}{E} (two energy counters). Pay {E}{E}: Choose target creature card in a graveyard. Exile it with a brain counter on it. Activate only as a sorcery. Rex has all activated abilities of all cards in exile with brain counters on them.
How Rex decks play in EDH
Rex, Cyber-Hound is a Azorius commander in white and blue costing 1WU, and its legendary artifact creature - robot dog line shapes the whole deck around it. The payoff is combat damage, so evasion and extra-combat effects matter more than raw power. It fills graveyards, which can be a win condition on its own or fuel for recursion. The cards below are the ones Rex, Cyber-Hound decks actually play most often, grouped by the job they do.
Most-played cards
20 cards · about $84.47Play rates from EDHREC. Prices from Scryfall, refreshed daily.
Ramp (2)
Card draw (4)
Removal (2)
Creatures (11)
Synergy & payoffs (1)
Build the full 100
Grimoire generates a complete, Commander-legal Rex, Cyber-Hound decklist with a written strategy, a full mana base and live prices — from the whole card pool, or only from cards you already own.
Start with RexRex deck questions
What colours can I use in a Rex, Cyber-Hound deck?
Rex, Cyber-Hound has a Azorius colour identity, so every card in the deck must be white and blue or colourless. That includes mana symbols in rules text, not just casting cost.
What are the best cards for Rex, Cyber-Hound?
The cards played most often in Rex, Cyber-Hound decks include Gleaming Splendor, Yoshimaru, Beloved Companion, Elrond, Moon-Reader. The full list of staples above is grouped by the job each card does, so you can see the deck's skeleton rather than just a pile of names.
How much does a Rex, Cyber-Hound deck cost?
The 20 most-played cards shown above come to roughly $84.47 at current market prices. A complete 100-card build costs more, and Grimoire can generate a budget version instead if you set a price ceiling.
Can I build a Rex, Cyber-Hound deck from cards I already own?
Yes. Import your collection into Grimoire and choose "my cards" when you build. The generator will only use cards you actually own, and the Missing Cards page shows what you would need to buy to finish any list.