Sturdy Hatchling enters the battlefield with four -1/-1 counters on it. : Sturdy Hatchling gains shroud (A permanent or player with shroud can't be the target of spells or abilities.) until end of turn. Whenever you cast a green spell, remove a -1/-1 counter from Sturdy Hatchling. Whenever you cast a blue spell, remove a -1/-1 counter from Sturdy Hatchling.