Jack, the Rustler

Jack, the Rustler enters the battlefield with X vigilance counters on it.

{p/w}{p/g}, {ut}: You gain X life, where X is the number of cards in your graveyard. Shuffle two cards from your graveyard into your library.

{t}, Remove a counter from Jack: Choose flying, intimidate, vigilance, trample, first strike, reach, haste, +1/+1, or -1/-1. Put a counter of that kind on another target creature.