Unbound Flourishing [Secret Lair Drop Series] BW74 you may reveal cards from

you may reveal cards from the top of your library until you reveal a creature card that shares a creature type with it

"I know this world

Set: Sun & Moon: Dragon Majesty Type: Dragon Rarity: Ultra Rare Retreat cost: Colorless

the Multifarious becomes a copy of target creature card in your graveyard with mana value X

[-8]: Exile the top eight cards of your library

Unbound Flourishing [Secret Lair Drop Series] BW74 you may reveal cards fromSet: Secret Lair Drop Series Type: Enchantment Rarity: Mythic Cost: {2}{G} Whenever you cast a permanent spell with a mana cost that contains {X}, double the value of X. Whenever you cast an instant or sorcery spell or activate an ability, if that spell's mana cost or that ability's activation cost contains {X}, copy that spell or ability. You may choose new targets for the copy.