“Mutant goblin” is an acquired template that can be added to a goblin (referred to hereafter as the base creature). A mutant goblin uses the base creature’s statistics and special abilities except as noted here.
CR: Same as the base creature + 1.
Armor Class: Natural armor bonus increases by 4.
A mutant goblin gains four of the following mutations, determined randomly when it gains the template.
For every 5 Hit Dice it has (5, 10, and so on), it gains another random mutation. (Other possible mutations include tusks, a spiked tail, and gills.)
Breath Weapon (Su) The goblin can spew a line of foul acidic blood from its mouth (20-foot line, Reflex DC = 10 + 1/2 Hit Die + its Constitution modifier for half damage, 1d4 points of acid damage per HD, usable every 1d4 rounds). If it has 5 or more HD, the range increases to 30 feet and the damage increases to 1d6 points of acid damage per HD.
Claws (Ex) The goblin’s hands become claws. It gains a natural claw attack for each hand that deals damage appropriate to its size, and gains the grab ability with its claws.
Extra Arm (Ex) The goblin gains an extra arm with a functional hand, as the vestigial arm discovery. If it gains this mutation again, it gains another arm.
Venomous Bite (Ex) The mutant goblin grows large fangs, gaining a poisonous bite as a natural attack that deals damage appropriate to its size. The poison functions like wyvern poison, except its DC is 10 + 1/2 HD + its Constitution modifier.
Wings (Ex) The goblin gains dragonfly wings, granting it a fly speed of 30 feet with clumsy maneuverability.
Pathfinder Roleplaying Game Monster Codex © 2014, Paizo Inc.; Authors: Dennis Baker, Jesse Benner, Logan Bonner, Jason Bulmahn, Ross Byers, John Compton, Robert N. Emerson, Jonathan H. Keith, Dale C. McCoy, Jr., Mark Moreland, Tom Phillips, Stephen Radney-MacFarland, Sean K Reynolds, Thomas M. Reid, Patrick Renie, Mark Seifter, Tork Shaw, Neil Spicer, Owen K.C. Stephens, and Russ Taylor.