Murktide Regent [Modern Horizons 2]

Set: Modern Horizons 2 Type: Creature — Dragon Rarity: Mythic Cost: {5}{U}{U} Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)FlyingMurktide Regent enters the battlefield with a +1/+1 counter on it for each instant and sorcery card exiled with it.Whenever an instant or sorcery card leaves your graveyard, put a +1/+1 counter on Murktide Regent.