Dominaria

Blackblade Reforged | Legendary Artifact | Equipment | Equipped creature gets +1/+1 for each land you control. Equip legendary creature {3} Equip {7} | Chris Rahn

Forebear's Blade | Artifact | Equipment | Equipped creature gets +3/+0 and has vigilance and trample. Whenever equipped creature dies, attach Forebear's Blade to target creature you control. Equip {3} | Scott Murphy

Gilded Lotus | Artifact | | {T}: Add three mana of any one color. | Volkan Baǵa

Helm of the Host | Legendary Artifact | Equipment | At the beginning of combat on your turn, create a token that's a copy of equipped creature, except the token isn't legendary. That token gains haste. Equip {5} | Igor Kieryluk

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

Thran Temporal Gateway | Legendary Artifact | | {4}, {T}: You may put a historic permanent card from your hand onto the battlefield. (Artifacts, legendaries, and Sagas are historic.) | Jason Felix

Traxos, Scourge of Kroog | Legendary Artifact Creature | Construct | Trample Traxos, Scourge of Kroog enters the battlefield tapped and doesn't untap during your untap step. Whenever you cast a historic spell, untap Traxos. (Artifacts, legendaries, and Sagas are historic.) | Lius Lasahido