Daretti, Rocketeer Engineer 
Legendary Creature — Goblin Artificer
Daretti's power is equal to the greatest mana value among artifacts you control. Whenever Daretti enters or attacks, choose target artifact card in your graveyard. You may sacrifice an artifact. If you do, return the chosen card to the battlefield.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL