Gorging Hydra

When you cast Gorging Hydra, mill X cards.
Gorging Hydra enters the battlefield with X
+1/+1 counters.
At the beginning of your upkeep, exile up to one target permanent card in a graveyard. If a card is exiled this way, put a +1/+1 counter on Gorging
Hydra. If it was a creature card, you gain 2 life.