Aye, only reason why some people whale so much in DMM despite the free stuff we get. Literally too many things you want to do. That and they want to collect a particular girl. I heard previously when they sold limited cards to certain black girls on comiket for 10000 yen/100 USD, it sold out almost immediately.
They say wendy is a tier better than Ashera, since she deals pure dmg to 3 targets + cant die(?) while Ashera is does 3 normal shots to 3 targets.
That said, Ashera looks great if you have a map that needs 3 archers and you have nanaly+spica+ashera. +17% archer buff with nanaly? wtff
Wendy's art though, its awesome plus she came from another game or something, there was a video about it