Some trees become poisoned and malignant, tainted by the corrupt land around them, and spring to a macabre semblance of animation to attack those who trespass on their dark realms. Gnarled trees animate in the presence of living creatures, and attack indiscriminately for as long as creatures are within range.
The victims’ spilled blood seeping into the ground further feeds the trees’ corruption. Gnarled trees appear as twisted, or even dead, trees of great age and a variety of species, and they blend in with the surrounding forests. Spotting one as an anomalous growth requires a successful DC 17 Perception check (the DC may be higher, depending on the prevalence and condition of local trees). Though a gnarled tree is stationary and can’t move from its rooted spot, it attacks as if it were a treant. The gnarled tree doesn’t gain the treant’s animation and rock-throwing abilities, but does have the treant’s vulnerability to fire. When all living creatures move more than 30 feet away from the gnarled tree, it immediately returns to its normal, nonanimated state, until a potential target appears within range once more and provokes the corrupted tree’s ire again.
Pathfinder Roleplaying Game Horror Adventures © 2016, Paizo Inc.; Authors: John Bennett, Clinton J. Boomer, Logan Bonner, Robert Brookes, Jason Bulmahn, Ross Byers, Jim Groves, Steven Helt, Thurston Hillman, Eric Hindley, Brandon Hodge, Mikko Kallio, Jason Nelson, Tom Phillips, Stephen Radney-MacFarland, Alistair Rigg, Alex Riggs, David N. Ross, F. Wesley Schneider, David Schwartz, Mark Seifter, and Linda Zayas-Palmer.