NightWind
I thought about a theory since the Rainbow Corinth appeared. And that theory grew as other factors appeared (Ofrind's Boots and Transcendence Talent Potion). I think the tower will reward him by making him become Ofrind's successor, Rainbow Mage or something like that (that probably will be the #1 Digit class), and that class makes him able to use all elementals spells or something like that. Well, just a theory :P
NightWind:Oh no! Did you guess something!? đ± lol my readers might be too smart for me...