Thran Forge

{3} · Artifact

{2}: Until end of turn, target nonartifact creature gets +1/+0 and becomes an artifact in addition to its other types.

Motor: se resuelve a mano

Rulings (2)

If Thran Forge’s ability is activated targeting a nonartifact creature, then it’s activated again in response targeting the same creature, the second instance will resolve. The first instance will then be countered for having an illegal target, since the target is no longer a nonartifact creature.
Wizards of the Coast · 2008-04-01
Now becomes an artifact in addition to its other types.
Wizards of the Coast · 2005-11-01