At first glance, I wonder whether you will ever use six Mana Crystals. Personally, I'd remove at least three of these. The four Reverse Attacks in particular seem excessive to me as well... especially since an unavoidable attack will negate their effect.
Also, I don't understand why the Grizzly is in there instead of, for example, a Hydra?
On Wizard's Tower: I can't imagine any situation when a Wizard wouldn't put at least one in his book. I would probably put in a Surging Wave and/or Jet Stream for the tower, but that is just my taste.