
Target player discards a card for each Swamp you control.
Mind Sludge has 4 printings, first in Torment (2002). EDHREC ranks it #20,193 among Commander cards. It appears most in Korlash, Heir to Blackblade decks (163 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.