Defiler of Eternity

Annihilator 1

As an additional cost to cast colorless permanent spells, you may pay 2 life. If you do they cast {c} less to cast if you paid life this way. This effect only the amount of colorless mana you pay.

When you cast a colorless permanent spell, you create a 0/1 Eldrazi Spawn token, with "sacrifice this creature: add {c} to your mana pool"