Dimension Door.
Minor Sequencer.
Spell Sequencer.
Spell Trigger.
Contingency.
Chain Contingency.
Limited Wish.
Wish.
Timestop.

They were way too instrumental to how Mages worked in BG2 and ToB(and in regards to Minor Sequencer also in BG1), that they would have to impliment them into the game, imo. And yes, it would work great in the turnbased system aswell.