Throne of Eldraine

Corridor Monitor | Artifact Creature | Construct | When Corridor Monitor enters the battlefield, untap target artifact or creature you control. | Jason Felix

Folio of Fancies | Artifact | | Players have no maximum hand size. {X}{X}, {T}: Each player draws X cards. {2}{U}, {T}: Each opponent mills cards equal to the number of cards in their hand. | Colin Boyer

The Magic Mirror | Legendary Artifact | | This spell costs {1} less to cast for each instant and sorcery card in your graveyard. You have no maximum hand size. At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror. | Anastasia Ovchinnikova

Mantle of Tides | Artifact | Equipment | Equipped creature gets +1/+2. Whenever you draw your second card each turn, attach Mantle of Tides to target creature you control. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.) | Lie Setiawan

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

Vantress Gargoyle | Artifact Creature | Gargoyle | Flying Vantress Gargoyle can't attack unless defending player has seven or more cards in their graveyard. Vantress Gargoyle can't block unless you have four or more cards in hand. {T}: Each player mills a card. | Cristi Balanescu

Witching Well | Artifact | | When Witching Well enters the battlefield, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) {3}{U}, Sacrifice Witching Well: Draw two cards. | John Avon

Arcanist's Owl | Artifact Creature | Bird | Flying When Arcanist's Owl enters the battlefield, look at the top four cards of your library. You may reveal an artifact or enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Véronique Meignaud