Klasbirx, Hoarder Of Eyes

You may cast Klasbirx, Hoarder Of Eyes from
your graveyard or exile by sacrificing two goblins
instead of paying it's mana cost.
Whenever a goblin you control dies, add {b} or {r}. Use this mana to cast goblin spells or spells targeting goblins.
Goblin spells you cast have Frenzy. (Creatures
with Frenzy can be cast by sacrificing creatures equal
to it's converted mana cost)