Rune of Storms

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

You can channel magical energy into runes of lightning. As long as you have a lightning spell of 3rd level or higher available to cast, you can throw a lightning rune. The rune affects a 10-foot-radius burst and deals 2d4 points of damage per level of that lightning 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: Arc of Lightning, Call Lightning, Chain Lightning, Lightning Bolt, Storm of Vengeance, Scintillating Sphere, Call Lightning Storm, Energized Shield, Weapon of Energy, Orb of Electricty, Lightning Blast