Hi, I have the same decision to take on my Cleric 2 -> Krivis 3 character.
Oracle is a very supportive character, Counter Spell seems awesome in PvP and some PvM scenarios with spell casting mobs. If I picked Oracle, I’d pick Kabbalist at R7 though. The reason for that is because I feel Prophecy is a nice substitute for bloodletting. It doesn’t block Rank 2 abnormal effects but I can live with that in exchange for that awesome Merkabah from Kabbalist.
As for Druid, well, it’s a completely opposite path. It’s more oriented towards DPS and an invulnerability every now and then with Sterea Trofh.