Siege Staff, Focus

This model amplifies the spells cast by an attuned spellcaster. Any spell that requires an attack roll or saving throw can be cast through this model of siege staff. The range is magnified by a factor of 5, with a long range of up to 10 times the spell's standard range—so a fire bolt cast through a siege staff has a range of 600 feet and a long range of 1,200 feet. The spell's area of effect is doubled. If the spell normally affects a single target, it instead affects a 20-foot-radius sphere; if the spell normally requires an attack roll, targets must instead make a Dexterity saving throw. On a successful save, the target takes half damage and suffers no other effect.