Bop Gun, Endangered Species

Bop Gun, Endangered Species can't be blocked.

Whenever Starchild deals combat damage to a player, exile target creature that player controls and place a Bop counter on that card. That player loses the game if they own three or more exiled cards
with Bop counters on them. Starchild's owner shuffles Starchild into their library.

"Shoot em' with the Bop Gun" - Parliament