A-Circuit Mender 
Artifact Creature — Insect
When Circuit Mender enters, you gain 3 life. When Circuit Mender leaves the battlefield, draw a card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL