Personally I'm using this set. Can make it better I guess, it's just what I use atm.
ItemSet 373458
My cape is CHR+20, Macc+30, FC+10%. If you wanted one specifically for enfeebling you'd go for MND+ I suppose.
My Chironic have like MND+5/Macc+35.
Which I would dare say is a pretty good aug.
Alternatively you can use Brioso Cannions +3 and enjoy another +15macc from the set bonus.
If you're receiving the set bonus Brioso Cuffs +3 vs Inyanga Dastanas +3 are pretty close to each other (without the set bonus Inyanga wins).
I chose Inyanga over Brioso because it has higher MND/INT.
It has to be said that
Kaykaus +1 Path A is slightly better than both.
Kishar ring is lololol, very situational. Most of the times you'll want a second Stikini+1 I guess but I couldn't be bothered to have yet another manual trigger to turn on/off so I went with the utility granted by Kishar.
Ammo there's a lot of things you can use, Nibiru Harp Path A is probably the best. Alternatives are, I dunno. Nibiru path B/C/D? Linos? Aureole? Pampredo Tathlum?
Edit:
I forgot to mention the belt. Acuity +1 is obviously the augmented version.
Luminary Sash is probably slightly better/equal for MND based enfeebles. Depends on the dMND value. That MND+10 on Luminary could convert to 10 macc or even more, but it could convert to 5 or 0.
I think
Metamorph Ring +1 is in a similar position. Against a really highlevel target that MND+16 will convert into plentiful of macc for MND based enfeebles.
Against targets where the MND will convert to bad values, probably you don't need the additional macc to begin with and u're gonna stick ur debuffs regardless.
So yeah, I guess Metamorph+1/Luminary might be better in the end.