Let the Galaxy Burn 81/617 (Universes Beyond: Warhammer 40,000)

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.) Let the Galaxy Burn deals X plus 2 damage to each creature that didn't enter this turn.

NM - $1.50
LP - $1.50
MP - $1.50
HP - $1.50
DMG - $1.50