EL has some new drops with reasonable int on it, very light. Fog grimmin armor, and I think wasp wing armor drops there as well.
The new adventure pack came with a few caster items in it as well; you may need to lvl up a bit first tho.
Also, if you choose to hunt in EL for the drops, harvest the tussah roots! And anything else, for that matter, for the glimmering items.These are lvl 30 items, but are very nice. I have 2 chaos imbued cloth hex dolls, from oak roots and glimmering, that are +11 int each, and cast a magic res debuff type. And look for a severed oak, the imbued wand not only has the clicky of 200+ dmg, but also has +10 int.
mmm, for your lvl now, you could get the Oracle Robe from the silks quest in RoV. Orb of the Fallen is a nice symbol, as well, but I'm not quite sure where it drops... other than that, I had all rare armor from lvl 21-29. :P Lots of Mesquite Catch Weed...
I'm sure there are many others, but .. my 2cp!
---Fyrespring---
50 Provisioner
30 Conjuror