Wizards of the Coast has explained the effects of Circle Casting in Dungeons & Dragons. Next month, Wizards of the Coast will release Forgotten Realms: Heroes of Faerun, a player-facing campaign setting book. One of the major draws of Heroes of Faerun is the addition of Circle Casting, a new way to greatly enhance spells through a group casting. More details were provided about Circle Casting via a D&D Beyond article posted this week. While some spells (such as the newly revealed Doomtide and Spellfire Storm) have specific effects that activate during a Circle Casting, any D&D spell can be enhanced via Circle Casting. The following generic options are available when a spell is cast via Circle Casting.
Not every spell can be cast via Circle Casting. Eligible spells must have a casting time of an action or 1 minute or longer and is cast using a spell slot. When a spell is cast via Circle Casting, a primary caster is chosen, and the primary caster chooses the targets, maintains Concentration if needed, provides components, expends the spell slot, and makes any other choices the spell requires. Some Circle Casting options require every member of a Circle to expend spell slots as well.
