Int/Agi or Int/Cha Feca

Hello, this is my first time writing on dofus forum but I had a few questions.
I'm a lvl 6X Feca but it doesn't matter as I think I should reach 100 or so within a month.
I have been building my Feca as a hybrid between Int and Cha but I feel like I am using more Agi spells at the moment. This might be because I haven't unlocked Burning Glyph and Paralysing Glyph but I was wondering was works in later game. Int/Cha or Int/Agi? Any tips and advice is welcome,
Thank You