Couldn't have said it better.
Her dying sprite has her spear malfunctioning too... kinda neat cause that's literally the source of her cotton candy.
Do note that this is a one month long advent, so after you're done farming for the SSR weapon, SR SL fodder and the eido you could use leftover materials for the soul points. Leftover, because you can clear the event mission "clear stuff 5 times" every day and get back just about your AP's worth, depending on your cap.Originally Posted by HugMeTender
Outside of that, like Aidoru mentions there's Horus, which gives a huge crap ton of soul points in the shop for a much better comparative value.
Practice patience though, event's like a few hours away.
Extra edit (because OMEGALUL):
The dudes editing the wiki found the need to put this as an additional note in Uriel's page:
... wonder if that's actually a fact in Japan culture, and why I see so many yukatas in doujins