Bouldergeist

Spook {b} (You may cast this card face down
as a 2/2 creature for 3. When this creature dies
while face down, exile it. You may cast it later
from exile for its spook cost.)
Spawn 3—{2}{b}, Pay 2 life ({2}{b}, Pay 2 life,
Exile this card from your hand: Create three 1/1
black Minion creature tokens. You may cast this
card later from exile. Spawn only as a sorcery.)