Why can’t you reply to your own threads in this forum? How are you meant to give follow up data?
Well, curiosity got the better of me (and I am at a rank where you can’t lose stars) so I tried again today. Not only did Ultraxion make the game crash when I played it, and when I tried to attack with it, but it also crashed the game when my opponent cast Life Cycle on it.
I’m going to try a scan and repair and if that doesn’t work I’ll try reinstalling, because I’m sure that if this was happening for everyone there would a huge uproar about it, and I haven’t heard anything.