Thran Forge | Magic: The Gathering
Formats Thran Forge is Legal in
Official Oracle Text for Thran Forge
Official Rulings for Thran Forge
4/1/2008 : 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.