Dominaria

Guardians of Koilos | Artifact Creature | Construct | When Guardians of Koilos enters the battlefield, you may return another target historic permanent you control to its owner's hand. (Artifacts, legendaries, and Sagas are historic.) | Yeong-Hao Han

Mishra's Self-Replicator | Artifact Creature | Assembly-Worker | Whenever you cast a historic spell, you may pay {1}. If you do, create a token that's a copy of Mishra's Self-Replicator. (Artifacts, legendaries, and Sagas are historic.) | Joseph Meehan