Strixhaven: School of Mages

Excavated Wall | Artifact Creature | Wall | Defender {1}, {T}: Mill a card. (Put the top card of your library into your graveyard.) | Zezhou Chen

Reflective Golem | Artifact Creature | Golem | Whenever you cast an instant or sorcery spell that targets only Reflective Golem, you may pay {2}. If you do, copy that spell. You may choose new targets for the copy. | Daniel Ljunggren

Biblioplex Assistant | Artifact Creature | Gargoyle | Flying When Biblioplex Assistant enters the battlefield, put up to one target instant or sorcery card from your graveyard on top of your library. | Raoul Vitale

Campus Guide | Artifact Creature | Golem | When Campus Guide enters the battlefield, you may search your library for a basic land card, reveal it, then shuffle and put that card on top. | Slawomir Maniak

Cogwork Archivist | Artifact Creature | Construct | Reach {2}, {T}: Put target card from a graveyard on the bottom of its owner's library. | Joseph Meehan

Codie, Vociferous Codex | Legendary Artifact Creature | Construct | You can't cast permanent spells. {4}, {T}: Add {W}{U}{B}{R}{G}. When you cast your next spell this turn, exile cards from the top of your library until you exile an instant or sorcery card with lesser mana value. Until end of turn, you may cast that card without paying its mana cost. Put each other card exiled this way on the bottom of your library in a random order. | Daniel Ljunggren

Wandering Archaic | Creature | Avatar | Whenever an opponent casts an instant or sorcery spell, they may pay {2}. If they don't, you may copy that spell. You may choose new targets for the copy. | Wayne Reynolds