Index entry
Spark Staff
As an action, expend 1 charge. Creatures within 10 feet must make a DC 13 Constitution saving throw.
Complete rules
Thunderclap As an action, expend 1 charge. Creatures within 10 feet must make a DC 13 Constitution saving throw. On a failure, they take 2d6 thunder damage and are pushed 5 feet. On a success, they take half damage and are not pushed. The staff regains all charges on a long rest.