Circle Caster

Prerequisites: Level 4+, Spellcasting or Pact Magic feature

Eons ago, mages researching ancient magical traditions and artifacts developed a technique that allows many spellcasters to work together to cast spells beyond the limit of any individual. This technique became known as Circle Magic. Through rigorous study and practice, you have learned this technique and gain the following benefits.

Ability Score Increase. Increase your Intelligence, Wisdom, or Charisma score by 1, to a maximum of 20

Circle Casting. Any spell that has a casting time of an action or 1 minute or longer and is cast using a spell slot can be cast as a Circle spell. To cast a Circle spell, follow the usual rules for spellcasting, as well as the following rules for Circle spells.

You are the primary caster. Unless otherwise specified, you as the primary caster decide the spell’s targets, maintain Concentration if required by the spell’s Duration entry, provide the spell’s components, expend the slot for casting the spell, and decide any of the other options noted in the spell’s description. The spell’s effects originate from you. You take a Magic action to initiate casting a Circle spell. When you do so, choose which Circle casting option you’re using for this casting, you must maintain Concentration on the spell. You can use only one Circle casting option on a spell at a time. If a Reaction would trigger when a creature casts a spell, it also triggers when you take this action to initiate a Circle spell.

Secondary Casters. Casting a Circle spell requires that one or more secondary casters lend their magic to the spell. A secondary caster must have either the Spellcasting or Pact Magic feature to participate. After you initiate the spell, each secondary caster takes the Magic action to contribute to the spell. A secondary caster can take this action only while within 30 feet of you and before the start of your next turn.

Completing the Casting. If the spell has a casting time of an action, the Circle spell’s effects occur immediately after the final secondary caster takes the required action to contribute to the spell. You decide which secondary caster is the final one. If the spell has a casting time of 1 minute or more, you and each secondary caster must take the Magic action on each of your turns for the entire casting time, and you must each maintain Concentration while you do so. In this case, if any caster’s Concentration is broken, the spell fails and nothing happens, you don’t expend a spell slot, and any Material components aren’t consumed. To cast the spell again, you must start over.

Augment. When you cast a spell with a range of at least 5 feet, you can increase the range of the spell by 1,000 feet per secondary caster contributing to the spell, up to a maximum of a 1-mile increase.

Distribute. When you cast a spell that requires Concentration, you can distribute the mental load of the spell among you and the secondary casters. Once the casting is complete, you and all secondary casters can maintain Concentration on this spell. As long as at least one caster who contributed to the spell maintains this Concentration, the spell’s effects remain active.

Expand. When you cast a spell that creates an area of effect, you can increase one dimension of the spell’s area of effect for this casting by 10 feet per secondary caster contributing to the spell. For example, if a spell creates a 20-foot-radius Sphere, casting it as a Circle spell with two secondary casters would increase the radius to 40 feet. A spell that creates a Line that is 5 feet wide and 300 feet long, cast as a Circle spell with two secondary casters, could make a Line that is either 25 feet wide or 320 feet long. Each secondary caster contributing to the spell must expend a spell slot (no action required). If the spell fails, these spell slots aren’t expended.

Prolong. When you cast a spell that has a duration of 1 minute or longer, you can increase the duration of the spell depending on the number of secondary casters contributing to the spell, as detailed in the table below. Each secondary caster contributing to the spell must expend a spell slot (no action required). If the spell fails, these spell slots aren’t expended.

Safeguard. When you cast a spell that creates an area of effect, you can carve out a safe zone within that area of effect that is unaffected by the spell for its duration. This safe zone consists of a number of 5-foot Cubes equal to your spellcasting ability modifier plus the number of secondary casters contributing to the spell (minimum of one Cube). You can arrange the Cubes as you like, but each Cube must be contiguous with at least one other Cube. If the spell’s area of effect can be moved, the safe zone moves with it.

Supplant. When you cast a spell that requires at least one Material component with a specified cost that is consumed by the spell, you can reduce the minimum cost of one such Material component. Each secondary caster contributing to the spell must expend a spell slot of a level greater than or equal to the spell’s level (no action required). If the spell fails, these spell slots aren’t expended.