Sturdy Hatchling

This creature enters with four -1/-1 counters on it. {G/U}: This creature gains shroud until end of turn. (It can't be the target of spells or abilities.) Whenever you cast a green spell, remove a -1/-1 counter from this creature. Whenever you cast a blue spell, remove a -1/-1 counter from this creature.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oojdzhz0jpb1hgec923al.