Death Star

Flying
Crew X (Tap any number of creatures you control
with total power X or more: This Vehicle becomes an
artifact creature until end of turn.)
Death Star's power and toughness are equal to
how many creatures tapped to crew it.
If the crew is 1-5: Destroy target permanent.
If the crew is 6-10: Destroy all nonland
permanents.
If the crew is 11+: Destroy target player.