If you are a new player , I suggest to buy either magneto pack or a whole lot of IW uniform. I am old player with loads of Crystal and it still not worth mega t2 any character even ultimates. Ultimate list a lot of their worth with current updates. If you don't have any IW uniform get cap America, Iron man, war machine , spidey and Winter soldier ( and rocket if you can too). Other great IW uni ( but t2 natives) are thanos pvp king and Scarlet Witch pve queen.