AI should play 'other' cards last, all other things being equal. Using precog, I saw what the AI hand was, and it had 3 graboids and 2 short swords. It had 3 earth and 1 time quanta. It played the sword first, and used an earth quanta, and then passed, because it could no longer play graboid. It should play other cards last, unless there is a good reason to play them in another order. (such as drawing with shard of bravery, it might get something more useful than what it already has in hand)