Astroquarium

When this artifact enters, you may put an art sticker on it. {1}, {T}: Until end of turn, target creature becomes a blue Shark with base power and toughness 4/4. If the cracks in this artifact's art are completely covered, that creature becomes a blue Octopus with base power and toughness 8/8 instead. Activate only as

a sorcery.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o8x045rq1pb1henzy303f.