As you spend 10 minutes to cast this spell, you can replace a concoction, maneuver, or spell you know with another of the same type from a theme you know. If the spell is a cantrip, you must choose another cantrip. If the replaced spell is in your spellbook it disappears from your spellbook.
You can target one additional willing creature that you can touch or see within 10 meters for each additional mana expended. The creatures must be within 5 meters of each other when you target them.