One thing about this game, take the time to reread everything, and read it slowly to make sure. The rules and special things on the cards do exactly what they say they do and are very definite in their wording.
And you'll still be making mistakes months later
I glossed over the word 'battlegroup' in Kaelyssa's Phantom Hunter spell for a long, long time. When I was finally corrected I realized that Eiryss with Phantom Hunter did seem to good to be true....
Years into this and I still have to double check for things like 'within' and 'completely within', 'friendly'/'friendly faction', are the words enemy or living in there....