Captain Skeltuun

When Captain Skeltuun enters the battlefield,
summon 3 1/1 Skeleton Pirate tokens, Skeltuun is invincible as long as you control a Skeleton Pirate.
{x}{t} Exile X cards from your graveyard, summon
X 1/1 Skeleton Pirates.
{2}Sacrifice 3 Skeleton Pirates, give all creatures you control +2/0 until end of turn.