Rune of Thunder

Rune of Thunder
Type of Feat: Reserve Prerequisite: Ability to cast 3rd-level spells, Spellcraft 6 ranks. Use: Selected.

You can channel magical energy into runes of thunder. As long as you have a sonic spell of 3rd level or higher available to cast, you can throw a sonic rune. The rune affects a 10-foot-radius burst and deals 2d4 points of damage per level of that sonic spell. A successful Reflex save halves the damage. The rune lasts 30 seconds if no targets enter it's area of effect and this feat has a 30 second cooldown. Only one rune can be active (including runes from the other Rune of X feats).

Trigger Spells: Cacophonic Burst, Shout, Greater Shout, Castigate, Energized Shield, Sonic Shield, Lion's Roar, Resonating Bolt, Sound Blast, Orb of Sound, Song of Discord, War Cry, Dirge, and Wounding Whispers