The walking dead respond to your call.
Benefit: Add “human skeleton” to the list of creatures you can summon with summon monster I and “human skeletal champion” to the list of creatures you can summon with summon monster III. Once per day, when you cast summon monster, you may summon a skeletal version of one of the creatures on that spell’s summoning list (apply the skeleton template to that creature to create this monster).
Pathfinder Roleplaying Game Ultimate Magic. © 2011, Paizo Publishing, LLC; Authors: Jason Bulmahn, Tim Hitchcock, Colin McComb, Rob McCreary, Jason Nelson, Stephen Radney-MacFarland, Sean K Reynolds, Owen K.C. Stephens, and Russ Taylor.