Jsk Feats:Spell Flux

You have learned how to siphon tethers of magic from spells to quickly cast a second less powerful spell. You gain the following benefits:
 * Increase your Intelligence, Wisdom, or Charisma by 1, to a maximum of 20.
 * When you use an Action to cast a spell, you can immediately cast another spell as part of the same Action. The second spell must have a casting time of one Action. If the second spell deals damage, it deals half damage when cast using this feat. Once you have used this feat, you cannot use it again until you have finished a short or long rest.