Darth Vader, Sith Lord

Whenever Darth Vader, Sith Lord enters the
battlefield, destroy all creatures with power 4
or less.
Darth Vader, Sith lord cannot be dealt damage
by or blocked by a creature with power 4 or
greater.
{t},{5}{b}{b}: Destroy target non-land permanent.
"The ability to destroy a planet is insignificant next
to the power of the force"
- Darth Vader, Sith Lord