An event that would check to see if a player says a specific code word, then outputs a certain event.
I.E. If player typed out a certain spell (i.e. Fireball), a fire projectile would spawn.
This could also work with true/false events. That way, the fireball won't spawn unless a player has a certain item or completed a certain task.
I also feel this could be used in more ways than what I said, for example saying "/player stats" would bring up variables of the player without the need of another mod.