Card Rulings:Triggering Wurm
OCG Rulings
Q&A Rulings
Q: Lair of Darkness is face-up in the Field Zone, and its effect that changes all face-up monsters on the field to DARK-Attribute is applying. In this situation, if I use 2 Dragon-Type monsters including a Triggering Wurm as materials to Link Summon Hieratic Seal of the Heavenly Spheres, can I activate the effect of Triggering Wurm that Special Summons it?
A: Hieratic Seal of the Heavenly Spheres is a LIGHT Link Monster, but in this scenario it becomes a DARK monster due to the effect of Lair of Darkness. Therefore, you can activate the effect of Triggering Wurm that Special Summons it.[1]
