My ideas:
- Basic attack style: punches, speed same as Louis (slow)
- Magic frost shield: he creates an energy shield around him that freezes anyone that touches it. He can move around with the shield around him for a limited time. The shield can either be destroyed if it would take a lot of damage, or it can be destroyed if it stays for a longer time.
- Ice beam: shoots a beam that freezes the opponent. Simple, not very original maybe, yet pretty awesome imo / OR instead of a beam, shoot ice shards OR an icy wind toward the opponent (similar to what Ariel suggested). Too many possibilities here
- Icy magic: a move in which he makes movements with his arms, but you don't clearly see what he's doing. He is shooting invisible, highly chasing balls however, that freeze the opponents / OR instead of this, have him put up an icy wind that freeze enemies on a bigger range than the move mentioned above
- A move in which he defends and creates an ice clone of himself that is standing in the defending position as well, while he jumps backward himself. When the opponent hits the ice clone, the clone is destroyed and the opponent becomes frozen. It can be executed rather fast and works as a counter attack since our wizard isn't a good short distance fighter and can be dominated with melee attacks rather easily (yet he needs to be at least as strong as LouisEX). He needs an attack like this.
- A healing move similar to Jan's
I also think that because he is a wizard, a boss and far from a good hand-to-hand fighter, he should be able to use his special moves very often so we shouldn't make his moves cost too much MP.
Just some ideas
I wouldn't go for the minion summoning move though, as we will have plenty of minions in the stage mode already.