Tezzeret, Master of the Bridge

Affinity for artifacts has always been the game's most explosive discount because it scales without a ceiling, but for most of its life it lived on the artifacts themselves. Handing that discount to your creature and planeswalker spells specifically is what makes this Tezzeret unusual: a wide artifact board no longer just shields the walker, it pays for the rest of your hand, and the more Servos, Treasures, and equipment you have assembled, the closer your bombs drift toward free. The static discount and the plus both read from the same number, the count of artifacts you control. The plus deals that much damage to each opponent and gains you an equal amount of life, a symmetrical clock-and-cushion that converts a metal-heavy board into a lethal count you can start ticking the turn he lands. The other two abilities pull from adjacent zones. The minus-three recovers an artifact from your graveyard to your hand, and a returned artifact creature feeds straight back into the discount, while any other artifact simply replays at its printed cost. The ultimate digs ten cards deep and dumps every artifact among them onto the battlefield, the kind of one-sided flood that ends the game the turn it resolves. One resource ties the package together: artifacts on the battlefield power both the discount and the damage, the graveyard mode replenishes your hand, and the library mode floods the board outright. This is the Tezzeret built for a deck already drowning in metal, rewarding the count it was assembling anyway.