A lightning elemental gains a +3 bonus on attack rolls if its opponent is wearing metal armor, is wielding a metal weapon, or is made of metal (such as an iron golem).
Environment any (Plane of Air)
Though most think of the Plane of Air as a vast expanse of clear sky, that plane also holds the power of the storm, including monstrous hurricanes larger than entire worlds and thunderstorms whose peals and claps can shatter stone. Whether lightning elementals are the by-product of common air elementals spending too much time near these electrically charged storms or are merely calved off like forgotten flurries, they are aggressive and almost suicidal in their willingness to leap into battle. They particularly enjoy attacking creatures that are made of metal and creatures that wear metal armor or wield metal weapons.
Many lightning elementals have a roughly humanoid shape, but some prefer animalistic shapes (particularly birds and dragons), and a few appear to be nothing more than large disembodied heads made of dark clouds with flickering lightning tongues. Regardless of the shape a lightning elemental takes, the air around the creature hums and throbs with the promise of electrocution and the tangy stink of ozone.
Section 15: Copyright Notice - Bestiary 2
Pathfinder Roleplaying Game Bestiary 2, © 2010, Paizo Publishing, LLC; Authors Wolfgang
Baur, Jason Bulmahn, Adam Daigle, Graeme Davis, Crystal Frasier, Joshua J. Frost, Tim
Hitchcock, Brandon Hodge, James Jacobs, Steve Kenson, Hal MacLean, Martin Mason, Rob
McCreary, Erik Mona, Jason Nelson, Patrick Renie, Sean K Reynolds, F. Wesley Schneider,
Owen K.C. Stephens, James L. Sutter, Russ Taylor, and Greg A. Vaughan, based on material
by Jonathan Tweet, Monte Cook, and Skip Williams.