
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
Marsh Threader has 1 printing, first in Worldwake (2010). EDHREC ranks it #31,284 among Commander cards. It appears most in Major Teroh decks (7 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.