Enchanter support/mid

Edit I did not mean to have that picture appear so large. Also edited to try and be more concise in core concept

So I've been thinking of ways to make an interesting way to make a sword-mage in LoL. All of his abilities would be toggles, draining mana over time. Effects like increased AS and AD, dealing area damage on hits, and increasing AA range. He can have one ability on any given champ; including himself. Ulti would be a huge mana regen boost, long cool down no mana cost. Most likely only castable on himself to prevent abuse of burst mage teams. Passive would increase his mana regen as he bout another stat, either mana or ap. Does this sound like a concept that could work?