
Sima Yi's power is equal to the number of Swamps you control.
Sima Yi, Wei Field Marshal has 2 printings, first in Portal Three Kingdoms (1999). EDHREC ranks it #28,706 among Commander cards. It appears most in Cao Cao, Lord of Wei decks (37 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.