The Lost Caverns of Ixalan

Buried Treasure | Artifact | Treasure | {T}, Sacrifice Buried Treasure: Add one mana of any color. {5}, Exile Buried Treasure from your graveyard: Discover 5. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.) | Jarel Threat

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

Hunter's Blowgun | Artifact | Equipment | Equipped creature gets +1/+1. Equipped creature has deathtouch as long as it's your turn. Otherwise, it has reach. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.) | Hector Ortiz

Runaway Boulder | Artifact | | Flash When Runaway Boulder enters the battlefield, it deals 6 damage to target creature an opponent controls. Cycling {2} ({2}, Discard this card: Draw a card.) | Loïc Canavaggia