
Whenever you tap a Swamp for mana, add an additional {B}.
{B}: This creature gets +1/+1 until end of turn.
Nirkana Revenant has 4 printings, first in Rise of the Eldrazi (2010). EDHREC ranks it #2,979 among Commander cards. It appears most in Strefan, Maurer Progenitor decks (4,537 on EDHREC). 1 public deck on TCG runs it.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.