Dreizehnn
I'm pretty sure that any caster from the age of gods can do exactly what Roman does, but with divine power as a medium instead of will power. I don't think Tamamo would be that impressed by him doing just that, on the other side if he could create a mini black hole or manipulate time then I think she would be impressed.
Nyx_Celeste:I don't think humans are capable of imposing Marble Phantasm since those things are only reserved for Elementals, Dead Apostles and True Ancestors. The best to replicate are Reality Marble which in a sense both Goetia and Solomon possessed in their noble phantasm. But anyway it can be said that those from the Age of Gods can use Magic but they are not considered as Magicians. Even Merlin who is known unrivaled in his sorcery can only be classed as a master of magecraft. Either way, True Magic is something that is harder to grasp even someone like Tamamo who have more knowledge but something from the Root is not a thing for her to know everything.
Thea siendo un Homunculo hecha para servir como sirvienta y guarda espaldas ella estarĂa diseñada para vivir una vida completa de humano debido a que su padre se la dio para que cuidara de su bienestar asĂ que dudo que sea de corta duraciĂłn como irisviel quien fue diseñada para ser el buque del grial razĂłn por la que tiene poca esperanza de vida.
So eiznbern wish granting sorcery trait? I'm pretty sure it's not going to be as versatile as you portray it to be. Honestly I'm a little disappointe, Fate shines best when magic resembles real world occult stuff not generic dnd fireball/magic beam attacks. Also its supposed theme for powerful magic abilities to create a warped mindset, Shiki, Manaka etc. Would have been more interesting if Mc say was suffering a constant feeling of surrealism/dissonance from his isekai abilities.