i saw ppl using on pvp/pve. its really better then drum? and how about prophecy of water and fire? i had a aero elven.. if prophecy of wind is really good for pvp/pve and for me, i will change. but before i do it i want ask your opnians guys!
drum decreases critical damage taken by 30%. powind doesn't. what you trade it off is magic dmg and health, tho. check description.
powind is for feohs and only for feohs. it increases magic damage by 20% (all magic damage, normal and critical) and only magic damage, you won't see +20% on your m.atack just on your damage. also gives +20% hp instead of mp like drum melody does. that' s why some warriors want this buff...