*Prerequisite: You pick a spell you can cast as a part of this Activity.* You spend the next 10 minutes casting a spell that has a casting time of 10 minutes, or a [ritual](https://a5e.tools/rules/spellcasting) spell that has a casting time of 11 minutes or less. **Longer Casting Times.** You can do this Activity multiple turns in a row to cast spells with a longer duration. **Rolling Initiative.** If you roll intiative while engaged in this Activity, you can continue to cast the spell in combat by taking a special Magic action on each of your turns to maintain Concentration on the spell being cast.