The Skysplitter

Hexproof, indestructible

{b}, Sacrifice a creature: Put a doom counter
on The Skysplitter.

{2}{r}{r},{t}: The Skysplitter does X damage to
X targets X times, where X is the number of doom
counters on The Skysplitter. Exile The Skysplitter.

As each innocent victim was shoved into the furnace,
The evil hum grew.