I feel that Stella is useless move at this point and should be made into an AOE spell to make it more useful.

To combat ASt's RNGness- i think shuffle should have the same cast time as Draw- so if you don't get the intended card the 1st time , you at least can use shuffle for a 2nd chance at a desired card. I think that would ease the RNGness of AST and make it more enjoyable.