looking around I've found a trinket to remove poisons (heart of noxion). a trinket to remove cc effects (pvp) but I'm wondering if there's anything that can remove disease or magic effects either than potions or one shot items?
Druids have their cure poison spell. As for magic and diseases, those have to be cured by another class that can do so(paladin/priest/shaman for disease and paladin/priest for magic). Thers also an item from a quest in EPL, Moist Towelette, that you can use.