Akkar, Guardian of Souls

Flying, Hexproof
At the beginning of each upkeep, target player
loses 3 life or exiles a card, either on their battlefield or in their hand.
Heroic - Whenever you cast a spell that targets
this card, put a +1/+1 counter on it.
You may remove a +1/+1 counter from this
creature, deal 5 damage to target creature.