Zakir, Zach's Staff

Whenever an Enchantment enters the battlefield
under your control, that Enchantment exiles
target creature an opponent controls with
converted mana cost less than or equal to that Enchantment's converted mana cost until that Enchantment leaves the battlefield.
"People say it's just a staff, but I see it as a friend, a
God, and my childhood."
—Zach, Founded Theory