Caleb, Ulamog’s General

Devoid Menace
Creatures you control have devoid
Whenever you sacrifice a scion for mana
scions you control get +1/+1, annihilator 1
and “this creature cannot have more than
one instance of annihilator” until end of turn
If this ability has resolved more than once on
your turn you may pay {2} to draw a card