So, I got my life wizard up to grandmaster and am ready for Celestia.
I've got an ice/storm wizard that I was going to work on next, but I've been playing a balance wizard I started instead. I had first thought about doing just balance and saving my training points for the new secondary schools in Celestia, but that just seems a bit difficult now that I know what I'll have to face before that. So, here's some thoughts--please let me know what you think.
1: Fire or storm with some ice (up to the tower shield). This would let me use the elemental blades and traps well and the third element for my wand/amulet/etc. The reason for this being my first choice is that the Hydra is elemental, so keep with that theme.
2: Death up to feint and life up to satyr with some myth. This uses the spirit blades and lets me heal more, that's about it.
Ice up to Tower Shield. Death up to Feint. Don't even bother with the Elemental blades and traps, or even the Spirit blades and traps. Hydra (which you won't even get until level 42) is too weak IMO to even have in your deck. With your 2 blades and 1 trap, plus Feint should make anything you use much stronger.