Sudden mountain storms may rise up out of nowhere, bringing the possibility of flash floods, mud slides, lightning strikes and similar dangers. Those who know the mountain peaks know to fear these storm, and not simply for the threat they bring: some mountain tempests have at their heart a mighty thunderbird on the hunt, and anything that moves is fair game.
Mountain Terrors: Thunderbird is a bestiary PDF for the Chronicle System, the rules engine that powers our popular A Song of Ice & Fire Roleplaying game.
Evan (he/him) got his start in tabletop games in 1995, as a co-founder of Rubicon Games. Among other games, he has worked on Cranium, Cranium Hullabaloo, and the Pokémon trading card game. RPGs he has edited for include Everway, Ork! The Roleplaying Game, Spaceship Zero, Warhammer Fantasy second edition, the d20 System, A Song of Ice and Fire, Mutants & Masterminds, Dragon Age, Fantasy AGE, Modern AGE, Blue Rose, Pathfinder, and Critical Role (5e). He has been managing our web sites since about 2002. He co-designed Walk the Plank, our card game of piratical trick taking, currently available in print-on-demand format via DriveThruCards.com.