Fossil Dragon Skullgios — Ruling
Effetto 1
- This card's effect that switches the ATK and DEF of an opponent's monster when it battles is a Trigger Effect that activates on the field. (It does not target. It can be activated optionally before damage calculation when this card battles an opponent's monster.)
Effetto 2
- This card's effect that allows it to inflict piercing battle damage is a Continuous Effect.
Effetto 3
- This card's effect that doubles battle damage it inflicts to your opponent when it battles a monster is a Continuous Effect.
Fonte: YGOResources