Gaka To'Ran

Cowardly Rule:
All ally goblins gain +2 toughness, but
upon death, roll a d20 for each goblin:
1-5: discard that goblin
6-19: no affects
20: discard that goblin and replace it with
a Goblin Boss card. You may spend 4 mana
to replace the Goblin Boss card with
Gaka To'ran.