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Shadow Mastiff

Shadow Mastiff CR 5

XP 1,600
NE Medium outsider (evil, extraplanar)
Init +2; Senses darkvision 60 ft.; Perception +11


HP 70
EAC 17; KAC 19
Fort +7; Ref +7; Will +6
Defensive Abilities shadow blend


Speed 50 ft.
Melee bite +15 (1d6+10 P & C plus trip) or tail slap +15 (1d4+10 B)
Offensive Abilities bay


Str +5; Dex +2; Con +3; Int -3; Wis +0; Cha +1
Skills Acrobatics +11, Athletics +11, Stealth +16 (+20 when not in bright light)
Languages Common, Shadowtongue (can’t speak any language)


Bay (Su) When a shadow mastiff howls or barks, every creature within a 300-foot spread except evil outsiders must succeed at a DC 15 Will save or become panicked for 1d4 rounds. This is a sense-dependent, mind-affecting fear effect. Whether a creature succeeds at the save or not, it can’t be affect by the same shadow mastiff’s bay for 24 hours.

Shadow Blend (Su) In any condition of illumination other than bright light, a shadow mastiff disappears into the shadows, giving it Concealment”>concealment (50% miss chance). A shadow mastiff can suspend or resume this ability as a swift action. In addition, a shadow mastiff gains a +4 racial bonus to Stealth checks while in any condition of illumination other than bright light, and it can hide even if it is observed or lacks cover.

Trip (Ex) In addition to dealing the listed damage, if a shadow mastiff hits with its bite attack and the attack roll result equals or exceeds the target’s KAC + 4, the shadow mastiff also automatically trips the foe (this takes no action).


Environment any (Shadow Plane)
Organization solitary, pair, or pack (3–8)

Native to dimly lit areas of the Shadow Plane, these ferocious and alien-yet-familiar beasts often inspire a primal terror in those who witness them in drug-fueled nightmares and visions of that dimension.

Though they are commonly known as shadow mastiffs, these creatures have little in common with actual canines except for their appearance, and shadow mastiffs might bear a closer resemblance to local predatory beasts. Shadow mastiffs discover new hunting grounds when power-hungry or corrupt mortals summon them, or when mystical and technomagical rituals tear the veil that separates their world from the Material Plane.

Section 15: Copyright Notice

Starfinder Adventure Path #11: The Penumbra Protocol © 2018, Paizo Inc.; Authors: Jenny Jarzabski, with Isabelle Lee, Owen K.C. Stephens, and James L. Sutter.