Board Thread:Game Discussion/@comment-81.206.77.9-20130917130344/@comment-11264457-20130917160324

You need 4 cards to fully evolve Skywarp. If you have one evolved with 2 two cards, you must throw the third card in with it and then the forth (hopefully fully upgraded). You can not combine two 2X evolved cards together. I hope I replied in time to save you from wasting your effort.