Maester Seymour
At the beginning of combat on your turn, put a number of +1/+1 counters equal to Maester Seymour's power on another target creature you control. {3}{G}{G}: Monstrosity X, where X is the number of counters among creatures you control. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)
How Maester Seymour decks play in EDH
Maester Seymour is a mono-green commander costing 2G, and its legendary creature - human elf cleric line shapes the whole deck around it. It cares about +1/+1 counters, so counter-doubling effects and creatures that grow on their own carry the deck. The cards below are the ones Maester Seymour decks actually play most often, grouped by the job they do.
Most-played cards
20 cards · about $67.32Play rates from EDHREC. Prices from Scryfall, refreshed daily.
Ramp (2)
Card draw (3)
Creatures (8)
Synergy & payoffs (6)
Lands (1)
Build the full 100
Grimoire generates a complete, Commander-legal Maester Seymour 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 Maester SeymourMaester Seymour deck questions
What colours can I use in a Maester Seymour deck?
Maester Seymour has a mono-green colour identity, so every card in the deck must be green or colourless. That includes mana symbols in rules text, not just casting cost.
What are the best cards for Maester Seymour?
The cards played most often in Maester Seymour decks include Roiling Canopy, Necklace of Girion, Dancing from Dark to Dawn. 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 Maester Seymour deck cost?
The 20 most-played cards shown above come to roughly $67.32 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 Maester Seymour 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.