Talk:Christmas 2015 Event Re-Run/@comment-71.178.207.253-20161120195257

Lol, this may be obvious, but how do you unlock the 4th stage (the final art) of a servant? Do you just get them to their final ascension?

Because when I look at some of my supports, I notice I'll see a maxed level/ascension servant, but their art is still the 3rd stage. Unless this is just optional?