Thunderclap

Regular 
Produces a single loud sound like an explosion or crash of thunder. The “subject” is the spot the caster chooses as the spell’s center. Outdoors, anyone within 3 yards of this place must make a HT roll or be deafened; anyone deafened may roll vs. HT every hour to recover. In an enclosed area – less than 10 yards in any dimension – increase this distance to 6 yards! The caster makes his roll at HT+2.

Cost: 2. 
Prerequisite: Sound.

Item 
Gloves, staff, wand, or jewelry. 
Energy cost to create: 300.