Jareth, Leonine Titan

Defense incarnate, and built that way on purpose. The 4/7 frame already wants to sit still, and the block trigger turns that posture into a wall nothing wants to test: anything that swings into Jareth meets an 11/14 in the damage step, a profile that eats attackers and survives. The toughness-first body is the whole bet, since the bonus fires only on defense, never offense. Attacking with Jareth is fine; the card does not reward it. The protection ability completes the design: a repeatable, color-of-your-choice shield that lets him chump-proof against any single threat, dodge a kill spell, or walk through a blocker on the rare turn he does swing. White rarely gets a creature that is both an immovable defensive anchor and a flexible answer to targeted removal, and the triple-white cost is the gate that pays for both. He reads as a control finisher and a governor of the board: not a card that ends games quickly, but one that decides whose attacks are allowed to matter. The Cat Giant typing and the name (a nod to a leonine king) frame him as a guardian rather than an aggressor, which is exactly how the rules text plays out.