You command the crumbling of stone and revel in rust; the decay and destruction of metal and stone over time appeals to and delights you.
Rusting Touch (Su): You can cause an opponent’s metal armor or weapon to become dry and brittle as it magically corrodes and rusts. You make a melee touch attack against a creature wearing metal armor or wielding a metal weapon. If you hit, choose a metal weapon, suit of metal armor, or metal shield carried or worn by that creature. The object takes an amount of hit point damage equal to 1d6 + half your druid level. If the item is not magical, or if your caster level is greater than the item’s caster level, this damage bypasses the item’s hardness. You can use this ability a number of times per day equal to 3 + your Wisdom modifier.
Erosion Aura (Su): At 8th level, you can project an aura of magically enhanced erosion as a standard action. Objects made primarily of metal or stone within this aura lose 10 points of hardness. Magic items retain a minimum hardness equal to twice their enhancement bonus and can attempt a Fortitude saving throw (DC = 10 + half your druid level + your Wisdom modifier) to negate this effect. A construct made primarily of metal or stone must succeed at a Fortitude save or lose all damage reduction and hardness for 1 round. You can use this ability a number of times per day equal to 3 + your Wisdom modifier.
Domain Spells: 1st—expeditious excavation, 2nd—soften earth and stone, 3rd—disable construct, 4th—rusting grasp, 5th—transmute rock to mud, 6th—sympathetic vibration, 7th—disintegrate, 8th—earthquake, 9th—implosion.
Pathfinder Roleplaying Game Ultimate Wilderness © 2017, Paizo Inc.; Authors: Alexander Augunas, John Bennett, Robert Brookes, John Compton, Dan Dillon, Steven T. Helt, Thurston Hillman, Eric Hindley, Mikko Kallio, Jason Keeley, Isabelle Lee, Jason Nelson, Stephen Radney-MacFarland, Alex Riggs, David N. Ross, David Schwartz, Mark Seifter, Jeffery Swank, and Linda Zayas-Palmer.