Jor Kadeen, the Prevailer

The metalcraft anthem is the engine, but the body is the part that swings the corners. A 5/4 with first strike already trades up against most midrange creatures, killing nearly anything it meets before it takes a scratch in return; flip on the artifact count and that same body comes in for eight while every other creature you control quietly gains three power. That is the design tension Jor Kadeen resolves: an anthem effect usually wants you to flood the board with small bodies, but a conditional +3/+0 keyed to a metalcraft threshold rewards going wide with cheap artifacts and creatures in the same shell, so the deck never has to choose between the bodies and the payoff that makes them lethal. A board of two-power tokens becomes a board of five-power attackers the moment the third artifact resolves, and that is the swing a defending player cannot survive in one turn. The threshold is the cost: three artifacts is a real ask in a creature-heavy aggressive deck, and when you miss it the anthem is dark and Jor Kadeen is a five-drop whose value rests entirely on his own first-striking body. The first strike stays on him alone; the +3/+0 is the part the rest of the team shares. He was built as the warleader for a red-white aggro plan that lives and dies on alpha strikes, the payoff that pays off only if you committed to both halves of the equation.