The Lost Caverns of Ixalan

Cartographer's Companion | Artifact Creature | Gnome | When Cartographer's Companion enters the battlefield, create a Map token. (It's an artifact with "{1}, {T}, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.") | Chuck Lukacs

Compass Gnome | Artifact Creature | Gnome | When Compass Gnome enters the battlefield, you may search your library for a basic land card or Cave card, reveal it, then shuffle and put that card on top. | David Astruga

Disruptor Wanderglyph | Artifact Creature | Golem | Whenever Disruptor Wanderglyph attacks, exile target card from an opponent's graveyard. | Izzy