Ohh Just saw this and did a little happy dance.

Silver Valkyrie + 100k = Silver Angel Niel

I pulled the Black Angel a while ago but only be leveling her on and off because I wanted to wait until I could get silver angels to up her skill. Now I can finally clear out all the Silver Valks I've been stuck with for ages. (I was lucky to mincost Kerry quite early on so never bothered making a Mincost Silver Valk)