Alpine Shrieker

Whenever Alpine Shrieker attacks, each opponent may exile a card from their hand.
Put a +1/+1 counter on Alpine Shrieker for
each opponent who didn't.

Whenever Alpine Shrieker deals combat
damage to a player, you may remove X +1/+1 counters from it. If you do, return a card with mana value X or less you own in exile to your hand.