Bruna, the Fading Light
Half of a meld pair, and the half that pays for itself before the merge. The reanimation rides the cast trigger, firing on the stack rather than from the battlefield, so a kill spell aimed at the 5/7 still leaves you with an Angel or Human back from the yard. That's the timing that makes a seven-mana body survivable: removal can answer the creature but not the value attached to casting it. The target list is narrow by design (Angels and Humans, the tribes the surrounding sets were built around), and the body is white's reserved top-end shape, a flier with vigilance that holds the ground while it pressures it.
The other half is Gisela, the Broken Blade, and the meld into Brisela, Voice of Nightmares is what the whole design points toward: a single card assembled from exactly two pieces. The elegant trick is that Bruna can supply its own partner. Reanimate Gisela off the cast trigger and the meld condition is met the moment both are on the battlefield, so the engine that keeps Bruna alive is the same engine that completes the transformation. Meld is rare enough that any card carrying it becomes a builder's puzzle by default, but Bruna is the unusual case where the standalone half earns the slot on its own. The reanimation justifies the cast; Brisela is the upside, not the entry fee.
