Thok, Impeccable Archer

When Thok, Impeccable Archer enters the battlefield it deals {x} damage to every non-elf creature on the battlefield.
At the beginning of your upkeep you may
sacrifice a creature with converted mana cost 4 or
more. If you did, destroy target creature with
flying.
"The Legendary Bowman's name's Thok 'cause it's
the sound his arrows make when they hit their target." —Sal Drem, to Ren Kaal.