Slifer the Sky Dragon

Offering, Flying, Shroud, Divine Offering
This spell cannot be countered.
This creatures power is equal to the number of
cards in your hand, and your hand size is
increased to nine.
Whenever an opponents creature enters the battlefield, or is flipped face-up, it has -4/0 until
end of turn. If a creature has 0 or less power
from this effect, destroy that creature.