Séance Board
From Duskmourn: House of Horror Commander set
Séance Board
Artifact
Morbid — At the beginning of each end step, if a creature died this turn, put a soul counter on this artifact.
: Add X mana of any one color, where X is the number of soul counters on this artifact. Spend this mana only to cast instant, sorcery, Demon, and Spirit spells.