
Haste
Delirium — When this creature enters, if there are four or more card types among cards in your graveyard, creatures with power 2 or less can't block this turn.
Mournwillow has 2 printings, first in Eldritch Moon (2016). EDHREC ranks it #25,896 among Commander cards. It appears most in Shessra, Death's Whisper decks (40 on EDHREC). It has 1 official ruling.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.