Ted's autocorrect

You attempt to change a spell while a creature is in the process of casting it. If the creature is casting a spell of 7th level or lower, the creature regains the spellslot or casting use and you replace the spell with another spell you know causing you to expend a spell slot appropriate to the spell's level. The spellcasting modifier, spell attack modifier, and spell save dc of the creature do not change and neither does the original intended target of the spell. If the spell requires concentration the creature is considered to be concentrating on the spell and all previous concentrations are lost.