Core Set 2020

Diamond Knight | Artifact Creature | Knight | Vigilance (Attacking doesn't cause this creature to tap.) As Diamond Knight enters the battlefield, choose a color. Whenever you cast a spell of the chosen color, put a +1/+1 counter on Diamond Knight. | Alayna Danner

Meteor Golem | Artifact Creature | Golem | When Meteor Golem enters the battlefield, destroy target nonland permanent an opponent controls. | Lake Hurwitz

Pattern Matcher | Artifact Creature | Golem | When Pattern Matcher enters the battlefield, you may search your library for a card with the same name as another creature you control, reveal it, put it into your hand, then shuffle. | Jesper Ejsing

Salvager of Ruin | Artifact Creature | Construct | Sacrifice Salvager of Ruin: Choose target permanent card in your graveyard that was put there from the battlefield this turn. Return it to your hand. | James Paick

Scuttlemutt | Artifact Creature | Scarecrow | {T}: Add one mana of any color. {T}: Target creature becomes the color or colors of your choice until end of turn. | Jeremy Jarvis