HK-47, the Immortal

Whenever HK-47 dies or is exiled, instead put
HK-47 into its owner's library fourth from the
top. This effect cannot be countered.
When HK-47 enters the battlefield choose one:
• Search your library for a basic land and put it
onto the battlefield.
• Deal 4 damage to any target
• Gain 7 life. If Darth Revan is on the battlefield,
put a force counter on Darth Revan.
"Request: Die, Meatbag!"