Gisela, the Broken Blade

Gisela, la lame brisée (Gisela, the Broken Blade) (fr)

Legendary Creature - Angel Horror | Power/Toughness: 4 / 3 (CMC 4)
Flying, first strike, lifelink
At the beginning of your end step, if you both own and control Gisela, the Broken Blade and a creature named Bruna, the Fading Light, exile them, then meld them into Brisela, Voice of Nightmares.