Throne of Eldraine

Emry, Lurker of the Loch | Legendary Creature | Merfolk Wizard | This spell costs {1} less to cast for each artifact you control. When Emry, Lurker of the Loch enters the battlefield, mill four cards. {T}: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.) | Livia Prima

Gadwick, the Wizened | Legendary Creature | Human Wizard | When Gadwick, the Wizened enters the battlefield, draw X cards. Whenever you cast a blue spell, tap target nonland permanent an opponent controls. | Colin Boyer

Midnight Clock | Artifact | | {T}: Add {U}. {2}{U}: Put an hour counter on Midnight Clock. At the beginning of each upkeep, put an hour counter on Midnight Clock. When the twelfth hour counter is put on Midnight Clock, shuffle your hand and graveyard into your library, then draw seven cards. Exile Midnight Clock. | Alexander Forssberg

Mirrormade | Enchantment | | You may have Mirrormade enter the battlefield as a copy of any artifact or enchantment on the battlefield. | Volkan Baǵa