400 crystals for changing name is too expensive, because Evil Mojo removed daily rewards. When this game had daily rewards all of us received 50 crystals.
I wanted to change my name as well. My current name is JPG1975, but I would be renamed by Betruger2006. Why this name and that number. This name is the name of the bad guy of Doom 3, a legendary Game, and my first true Shooter that I had, on 2006, when I finished College.
I remember the Evil Laughs that Dr. Betruger did in my funny hours playing in that legendary game. And years after, in Paladins, when it started Dark Tidles event (Dredge) and the sinister skins for Fernando, Ying and Vivian (I had all of them except Fernando), in that time I had all champions unlocked. For me, that event, when I listened Banshee Ying evil laugh for a Killing Spree, returned my memories when I played Doom 3.