The Compendium of Collaborative Castings

A circle of cultists stands around the burning brazier, chanting infernal syllables as they summon the servants of their dark god.

Mages gather around an ornate workstation and pour enchantments onto the masterfully-forged weapons, turning them into magical items of great power.

A coven of hags hurls bizarre combinations of spells and curses at the attacking adventurers in defense of their swamp hut.

Groups of spellcasters working together to cast large rituals is a staple of many fantasy writings. This short document contains rules, examples, and spells for three different types of collaborative magic involving more than one spellcaster working in tandem. Included are rules for “boosting” other spellcasters’ spells to make them stronger, groups of spellcasters working together to cast larger spells that would normally be beyond their abilities, and examples of synergies involving multiple spells cast at the same time.

A secondary goal of this title is to create more uses for underused and underpowered spells such as witch bolt and cloud of daggers.