Sky Theater Strix

A 1/2 flier for two that grows every time you cast a noncreature spell is a design built to reward a specific kind of deck: the tempo shell that leans on cheap interaction and cantrips rather than a curve of bodies. The flying is what makes the payoff matter. A ground creature that got bigger off your spells still trades or gets chumped; an evasive one turns each pump into unblocked damage, so a hand full of one-mana instants becomes a clock rather than just a pile of answers. The wrinkle is the timing window. Because the bonus fires on cast and lasts until end of turn, you can hold the Strix back, then jam two or three spells during your own turn to send it in as a genuine threat, or fire off an instant on the opponent's turn purely to swing combat math on a block. It only counts your own noncreature spells, which quietly narrows the archetype: this wants to live alongside removal, counters, and card selection, not more creatures competing for the same slots. The body is fragile and the base power is nothing, so the card does not pretend to be a beater. It is a flying win condition a controlling or tempo hand assembles by playing the game it wanted to play anyway, the finisher hiding inside a deck built to answer rather than attack.