Donatello, Mutant Mechanic (TMT 216)

Legendary Creature — Mutant Ninja Turtle • Mana cost: {3}{U} • Teenage Mutant Ninja Turtles • Mythic

{T}: Put three +1/+1 counters on target artifact you control. If it isn't a creature, it becomes a 0/0 Robot creature in addition to its other types. Activate only as a sorcery.
Whenever an artifact you control is put into a graveyard from the battlefield, if it had counters on it, put those counters on up to one target artifact or creature you control.

Illustrated by Andrew Griffith.