Flying, lifelink, haste

Delirium— Whenever Gisela, Blade of Nightmares attacks, if you both own and control an attacking creature named Bruna, Light of Nightmares and there are four or more card types among cards in your graveyard, you may pay {1}{R}{W}{B}. If you do, exile them both, and meld them into Brisela, the Nightmare tapped and attacking.

Flying, lifelink, vigilance, menace

Annihilator 5 (Whenever this creature attacks, defending player sacrifices five permanents.)

Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)