I always had an idea for a spell where an elementalist would create an orb (similar to the energy orb on Diablo 2 for the sorceress) but instead of it giving protection, it could be similar to the faerie guardian that clerics have. During combat, this orb could supplement the elementalist by randomly doing random crits of whatever lore it were cast as, and also casting bolts or strikes. Perhaps the effectiveness of the spells could be in relation to the amount a person has in the lore skill that is used.
When cast, it changes the room to a 'plane' of that element. For example, if you cast elemental plane with fire, it would turn the room into a plane of fire. Still the same room, but a fiery version of it. Anyone in that room would suffer a slight decrease in the protection of a given element, but anyone using elemental bind or elemental transformation of that given lore would have their defenses increased for that given element. I feel like this might give some reason to party up, or team up with an elementalist for any reason, and may give them something to offer other than 'blade bitch' and 'dragon bitch'.
To make the room seem like a "plane version" of that room, one could make the words in the description change from gray-ish white to red for fire, green for plasma, orange for something else, blue for ice or wind etc...