>betray everyone you know, every oath you took, become a tadpoled slave, and sign up for eventual obliteration of your soul through ceramorphosis in exchange for....a third level wizard spell list feature
He did not think this one through

>>532428831
Don't forget that there is also an elixir for crits, and also an elixir for surprise immunity.
crit range stacking is pretty fun and pretty good but I wouldn't worry about hex. the gear, elixir, and other multiclass is already enough and there is such thing as too much multiclassing.