Mel0n_Pan
There's so many possibilities for spells, imagine a spell that smash atoms, or maybe even mana together, creating a chain reaction, maybe he could make a Magical Breeder Generator inside himself, or even Nuke magic. If we're talking science maybe the manipulation of Dark Matter, which is basically an energy that destroy any matter that it touches, an even stronger attack magic that onl he can use. Or even a magic that is able to tear a worm hole in space, and one that is able to create an invisible pocket, and both of those combining would create a sort of space inventory.