Arcanis the Omnipotent

Drawing three cards a turn is broken; the entire design is built around making you wait for it. A 3/4 that lands with summoning sickness, it has to survive a full rotation before the tap ability does anything, and even then a single removal spell strands you with nothing for your six mana. The bounce ability is the answer to that fragility: spend four mana to return it to hand before it dies, then pay the full six again to redeploy. That loop is the whole bargain. The card refuses to be a one-time payoff and instead behaves like a recurring, self-protecting card-advantage engine, but only for a deck with the mana to keep recasting and re-tapping it. It is the marquee blue payoff for the Wizard tribe: the creature that justifies a shell built to ramp into and protect it. The numbers are deliberately steep. Three cards on a stick can warp any game it stabilizes, so the cost of admission (six mana, a turn of vulnerability, and a four-mana insurance policy) is doing exactly the work the rate demands. Untap with Arcanis even once and the game tilts; the design simply makes you earn that untap step.