Sanguine Sacrament [Ixalan]

Sanguine Sacrament [Ixalan]Set: Ixalan Type: Instant Rarity: Rare Cost: {X}{W}{W} You gain twice X life. Put Sanguine Sacrament on the bottom of its owner's library. "As the sun sets to make way for dawn, so we turn to darkness to bring about the coming salvation."

but I didn't expect it from the building itself

Set: Arena League 2001 Type: Instant Rarity: Rare Cost: {1}{B} Target player sacrifices a creature

{T}: Target creature gains flying until end of turn

though he never fully comprehended its mystical runes

When Serra Avatar is put into a graveyard from anywhere

it gets +2/+2 and has flying

Set: Commander 2016 Type: Legendary Artifact Creature — Human Rarity: Mythic Cost: {W}{U}{B}{R} When Breya

a Mesa Pegasus will appear

Set: Explorers of Ixalan Type: Sorcery Rarity: Mythic Cost: {3}{U}{U} Target player takes an extra turn after this one

Unfathomable mysteries

Cursed Type: Creature — Spirit Rarity: Uncommon Cost: {W} Flying

Set: Vanguard Series Type: Vanguard Rarity: Rare {0}: The next 1 damage that would be dealt to target creature you control is dealt to you instead