
Put a card from your hand on top of your library: The next time a black or red source of your choice would deal damage this turn, prevent that damage.
Penance has 1 printing, first in Exodus (1998). EDHREC ranks it #10,061 among Commander cards. It appears most in Lorehold, the Historian decks (4,727 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.