Vedalken Archmage

The 0/2 body is the tell: this is a draw engine wearing a creature's clothes, and the design knows you will never attack with it. The payoff is per-cast, not per-permanent, which is the wrinkle that separates it from a static value rock. It does not care whether your artifacts survive, whether they enter, or whether they resolve at all: the trigger fires on the cast, so a countered Mishra's Bauble still cools your deck off a card. That timing is what made it the engine card for an entire style of artifact-saturated blue deck, where the threshold for "worth playing" drops because every cheap artifact is now also a cantrip and the deck's whole texture shifts toward a velocity it could not otherwise reach. The fragility is the cost: four mana into a 0/2 that any spot removal answers means the payoff has to arrive fast, before the opponent strips the engine. But left alone for even a turn cycle in a deck built to abuse it, the card advantage compounds past the point of recovery. This is the artifact-matters cousin to the spell-based engines that reward you for casting the thing you were already going to cast: draw a card whenever you do the deck's natural action, an enchant-on-a-body that turns repetition into velocity.