Clever Lumimancer

A 0/1 body that does nothing on the turn it arrives, produces no unprompted trigger, and cannot even chip in for damage on its own. Everything it becomes must be bought with spells cast that same turn, and because magecraft stacks, a chain of cheap instants and sorceries can turn this into lethal inside a single turn. The overlooked lever is the copy clause: since copies count as separate triggers, the growth ceiling isn't bounded by cards in hand but by how many casts and copies a turn can generate, which pushes the card toward a dedicated spell-slinging shell rather than a creature deck. The tradeoff is fragility of a specific kind. Each +2/+2 lasts only through the turn, so a turn spent not casting resets the clock to zero, and because magecraft fires on cast, the pump lands whether or not the spell resolves. The real vulnerability is the creature itself: a one-toughness body dies to any removal, and killing it in response to a spell erases the entire accumulated turn's worth of growth, since none of it is permanent. This is the pure aggressive reading of magecraft: not a value engine, not a payoff that survives interaction, but a damage-conversion outlet that trades all of its resilience for the highest reward per spell. It compresses a spellslinger deck's win condition into one white mana, asking the whole build to exist to feed it.