Gisela, the Broken Blade [From the Vault: Transform] Commander puts it on the bottom

puts it on the bottom of their library

Set: Rivals of Ixalan Promos Type: Creature — Phoenix Mythic Cost: {2}{R}{R} Flying When Rekindling Phoenix dies

the inhabitants of the Ivory Tower reward those who sacrifice power for knowledge

Set: Limited Edition Beta Type: Instant Common Cost: {U} You may tap or untap target artifact

sacrifice it unless you sacrifice two Swamps

Gisela, the Broken Blade [From the Vault: Transform] Commander puts it on the bottomSet: From the Vault: Transform Type: Legendary Creature Angel Horror Mythic Cost: {2}{W}{W} 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. She now hears only Emrakul's murmurs.