Nexus Clash

My Wrackwyrm still had one possible mutation left, but did not receive it upon killing a Holy Champion. If I were to hazard a guess, the mutation was picked randomly but did not exclude already chosen mutations from the pool, leading to no mutation being applied.

Looks like the issue was it was trying to select a mutation barred to it by the nature of Wrackwyrms. This should be handled correctly after a recent fix.