Gilgamesh isn't even a magus he can't qualify as he's not the Greatest Caster Heroic Spirit of his Era. He even says that he's just pretending to be a Magus
"Why do I pretend to be a mage? I'll tell you why. It's a deliberate provocation. You could say I'm sneering at someone. ...At that Grand Caster, of course! These eyes see right through him!"
- For the record, its Archer Gilgamesh who says he isn't a Grand, Caster Gil says nothing on the subject and is the one who has the Clairvoyance requirement. I think the best we should do is note that Caster Gil has the requirements mentioned but whether he is one is unstated.--Otherarrow (talk) 19:22, December 31, 2018 (UTC)
Not really, Clairvoyance is one of the requirements to be the greatest magus, and Gilgamesh isn't a magus as he himself states. If we are going to say that Gilgamesh does have the Clairvoyance needed we at least need to note that he isn't a magus and that Grand Casters have Clairvoyance because it's a requirement to be considered the best magus of their era.--Ramesses the Sun King (talk) 15:28, January 1, 2019 (UTC)