Ashnod's Transmogrant

{1} · Artifact

{T}, Sacrifice this artifact: Put a +1/+1 counter on target nonartifact creature. That creature becomes an artifact in addition to its other types.

Motor: se resuelve a mano

Rulings (1)

It’s the ability, not the counter that makes the creature an artifact. The creature remains an artifact even if the +1/+1 counter is removed.
Wizards of the Coast · 2007-09-16