Frolicking Familiar // Blow Off Steam

Prowess by another name, and a strictly narrower one at that. Rather than the keyword's blanket trigger on any noncreature spell, this Otter's bespoke ability fires only on instants and sorceries, spelled out longhand for +1/+1 until end of turn. The effect is the same shape as prowess (a triggered pump that rewards a chain of cheap spells), just fenced to the two card types a spells-matter deck lives on anyway. What carries the package is the adventure half. Blow Off Steam is a red ping stapled to a blue body, and the two halves are cast in sequence, never together: you fire the removal first, exile the card, then deploy the flier from exile on a later turn. That order matters. Because the creature isn't on the battlefield when the adventure resolves, Blow Off Steam does not trigger the body it becomes; it is simply a point of early reach that you get to convert into a threat once the coast is clearer. The adventure also answers the fragility problem baked into a 2/2 that only earns its keep while attacking: you never commit the creature before you're ready, and the front half is never a dead card in the meantime. This is adventure doing exactly what the mechanic was built for, folding a spell's worth of value and an evasive, scalable clock into a single card a low-curve spells deck can justify on rate alone.