Stuxnet

Enchant creature
Logic Bomb {b}{r} (You may cast this face down for {3} as an Aura spell with enchant creature. Turn it
face up any time for its logic bomb cost.)
When Stuxnet is turned face up, destroy up to
one target artifact and up to one target land.
Enchanted creature has "At the beginning of
each upkeep, you lose 1 life."