Snail Colony

Defender, Lifelink
Snail Colony enters the battlefield with X +1/+1 counters on it
{t}: Put a +1/+1 counter on Snail Colony
Gelatinous Gratuity - {u}: Remove 3 +1/+1 counters from Snail Colony to return target Instant or sorcery spell from your graveyard
to the top of your library.