This piece is worthless for drg, unless you like looking like a WWI german soldier hehe.
Solo: Wyrm Armet, Drachen Armet. or if you really really want to switch to an item before you cast with Drachen Armet, Barone Zuchetto gives mass parrying skill. Dont need to heal if you parry alot. If you think it's good for soloing, sorry to be an *** but you're wrong. To do HB @50% you need to have Drachen Armet on, meaning you loose that 22 mp, and if you want haste use waldra turban then switch to Drachen armet.
PT:Optical hat gives more acc, or if you're like me and use haste build for TP gain Waldra Turban is hands down better. A drg will not need the acc with polearm merits and/or a Acc neck and a body with some acc(IE: AJ or if you really need the acc Scorpion Harness)