Channel the Gift

This is a conversion of the Channel the Gift spell from Pathfinder 1e

You touch one creature with the ability to cast spells using spell slots and channel your magical power to fuel the target's spellcasting. The next spell the target casts of 3rd level or lower does not expend a spell slot. The target must cast the spell before this spell's duration ends, and the spell cannot have a casting time longer than 1 action.

If cast on yourself, before the end of your next turn you can cast one spell with a casting time of 1 action which is on your spell list but you do not currently have prepared. This option of the spell has no effect if you are not a prepared spellcaster, such as a bard or sorcerer.

A cleric who worships Nethys can replace one of their 3rd level Domain spells with this spell. The decision to substitute a Domain spell must be made upon gaining a new level of cleric, but you can change your decisions on the matter when you level up again.