mtg black sacrifice cards | Collectors' Edition Add to your mana pool an amount of black mana equal to the sacrificed creatures converted mana cost. MTG Best Modern Black Sacrifice

Thus, every 2 mana you put in gives you 4 damage from Purphoros

Ancient CellarspawnAncient Cellarspawn, in addition to giving a discount on a few creature types, loves when you cast discounted spells

They are about to meet their creator, their actions weighed, and find out where they will spend the remainder of eternity: in heaven or in hell

Aggro loves it too

A goofy, janky deck like last week's Obuna Grandsquall with a Primal Surge wincon may not hit it very often, but that can make those rare games where you hit it all the more sweet

Failing that, Two-Headed Hunter is a decent attacker that can quickly thin out an enemy board state of chump blockers like 1/1 Rats, assuming the opponent won't just eat the damage.