Maelstrom Sacrifice

Split Second (As long as this spell is on the stack, players can't cast spells or activate abilities
that aren't mana abilities.)
Destroy target permanent
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.)