Namor the Sub-Mariner

Flying Namor's power is equal to the number of Merfolk you control. Whenever you cast a noncreature spell with one or more blue mana symbols in its mana cost, create that many 1/1 blue Merfolk creature tokens.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o9t0d6hajpb1h30gvopwm.