Breggis, Underworld Kingpin

Corruption (Whenever another creature you don't control dies, create a colorless artifact token named Gold. It has "Sacrifice this artifact: Add one mana of any color to your mana pool.")
Sacrifice two Gold tokens: Create a colorless artifact equipment token named Dagger. It has "Equipped creature gets +1/+0 and has deathtouch" and "Equip {1}."