
Whenever this creature deals damage to a player, that player gets two poison counters. (A player with ten or more poison counters loses the game.)
Marsh Viper has 5 printings, first in The Dark (1994). EDHREC ranks it #23,335 among Commander cards. It appears most in Kaseto, Orochi Archmage decks (102 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.