Actual Demon Overlord

Hexproof, Deathtouch
Whenever a creature dies, add {b}
to your mana pool.
{x}{b}{b}{b}{t}: Destroy all creatures
with power or toughness under {x}.
"They say listen, Obama and Hillary both
smell like sulfur. They smell like they came
from Hell. ~ Alex Jones, Reliable Source and
Verified Creator of the Universe