Colleen Wing, Street Samurai
Most creatures that grow do it by attacking, blocking, or eating other permanents; this one grows every time you point a spell at your own board. That inversion is the whole trick. Pump spells, protection auras, targeted buffs, a hexproof-granting instant: any spell that targets one of your creatures adds a counter here and also digs one card deep with a scry. The trigger takes a familiar white-aggro impulse (spend cheap spells to make a single body bigger) and quietly rewards you for the ones you cast on yourself rather than at the opponent, since the spells you were already firing to keep a threat alive now double as growth and card selection for the two-drop sitting in play. That second half matters as much as the counter: every trick smooths your next draw, so the card stays useful on turns when finding the next play beats winning a combat step. The design's limit is honest, and it is the target clause doing the work: the spell has to actually target a creature you control, so effects that hit the whole board, sacrifice fodder, or a card in your graveyard leave the ability cold. That narrows the deckbuilding ask to lists already leaning on cheap, single-target interaction. For those builds, this converts spell overhead into permanent board presence, one counter and one look at a time.
