This one’s not quite CS but oh well. Spell check - After a series of unfortunate accidents at the magical university, all novel spells must be submitted to the administration in writing to ensure their safety before first casting.

Root access - Access to the Underdark druid communication network, which is transmitted through a continent-wide system of interconnected tree roots.

Command: Line - A creative use of the command spell that forces an affected creature to spend their turn forming or waiting in an orderly line.

Neural net - The system of control used by an elder brain to control and coordinate illithids under its influence.