Brood Scarab

Mutagen (When this creature dies, you may move
all of its counters onto target creature.)
Whenever another nontoken creature you
control dies, create a 1/1 black Insect Mutant
creature token with mutagen.
{1}{b}, Sacrifice a non-insect creature: Put a
+1/+1 counter on Brood Scarab. Activate only as
a sorcery.