Mountain of Smiling Bodies

As Mountain of Smiling Bodies enters the battlefield, sacrifice up to 3 non-token creatures
you control. For each creature sacrificed this
way, create a 2/2 black Corpse Pile creature
token.
At the beginning of your upkeep, sacrifice up to
2 non-token creatures you control. For each
creature sacrificed this way, create a 2/2 black
Corpse Pile creature token.