@Yugl Personally I'd take a significant boost to magic accuracy, 2mp/tic refresh and an "Enhances enfeebling magic effect" even without knowing what it is over 1INT/MND boost on Augurs.
Hell, I'd wear this for enfeebles over Augurs even without the enhances enfeebling effect, particularly in Abyssea, where honestly I don't believe 1MND is going to make that big of a difference.
I'd pretty much full time this for everything except fast cast and melee, with the possible except of nuking if you have Morrigan's.
I have heard before that the accuracy added from increases in magic skill level begins to decrease around 250 making this piece significantly better than warlock's even just considering magic accuracy. Also you would need hMP+9 to beat this during resting so this is truly an outstanding piece.