Surge Crescent Helm: 250 k at least or a wing (valk/drag).
Wolver Tail (Bound to the wolver coat): 850 k or Shadow Valkyrie Wing Or Some Aura (Exept Love, Sprinkle, Twinkle and Unclean aura).
Just add me if you want to trade, my nickname is the same of the forum.
You wouldn't take a Sprinkle for the Coat? Of course, no one's going to actually offer you one, but if they did, you'd be crazy not to take it.