Magnetized Ore CR 2
The strange energies of the subterranean world can charge rocks and veins of ore with powerful magnetic fields, creating a hazard for anyone carrying or wearing ferrous metals. Any steel or iron brought within 20 feet of the ore is drawn toward it. Medium-sized creatures carrying 30 or more pounds of ferrous metal are pulled toward the ore as if by the pull special ability. The ore has an effective CMB of +7 and CMD 17. Small creatures are pulled if they have 15 pounds of metal, Large if they have at least 60 pounds. For creatures of other sizes, modify the weight required as per the rules for carrying capacity. Creatures wearing metallic armor suffer a penalty to their CMD to resist the pull (–2 for medium armor, –4 for heavy armor). Affected creatures are pulled up to 20 feet and slammed against the rock for 2d6 points of damage and gain the grappled condition. Creatures not carrying large amounts of metal but holding metal items in their hands are affected by a disarm maneuver as the items are ripped free. Freeing a stuck item requires a successful grapple check against the ore’s CMD.
Pathfinder RPG GameMastery Guide, © 2010, Paizo Publishing, LLC; Authors: Cam Banks, Wolfgang Baur, Jason Bulmahn, Jim Butler, Eric Cagle, Graeme Davis, Adam Daigle, Joshua J. Frost, James Jacobs, Kenneth Hite, Steven Kenson, Robin Laws, Tito Leati, Rob McCreary, Hal Maclean, Colin McComb, Jason Nelson, David Noonan, Richard Pett, Rich Redman, Sean K Reynolds, F. Wesley Schneider, Amber Scott, Doug Seacat, Mike Selinker, Lisa Stevens, James L. Sutter, Russ Taylor, Penny Williams, Skip Williams, Teeuwynn Woodruff.