Yggvanoth devourer

Landmorph {3}{b/r}{b/r}{b/r}
Menace
When you turn Yggvanoth devourer face up, every player can sacrifice any number of creatures. For every creature sacrificed that way, put a +1/+1 counter on Yggvanoth devourer. If a player sacrifices less creatures than Yggvanoth devourer's controller does, he or she is dealt damage equal to double the difference of sacrificed creatures.