Green Slaad

Hexproof, Deathtouch
As an additional cost to cast this spell, sacrifice a
green and black Slaad Tadpole.
Whenever a Black Slaad you control dies, discard
a card and pay {3}. When you do, transform one
of your Green Slaad into a Black Slaad. This
effect only happens once on a turn among
creatures you control.