Master Transmuter can be returned to its owner's hand to pay the cost of its activated ability.
07-08-2020
wotc
The artifact card you put onto the battlefield when the ability resolves may be the same card that you returned to your hand when you paid the cost. If so, it returns to the battlefield as a new object with no relation to its previous existence.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.