Twinsoul

Source: Starfinder #9: The Rune Drive Gambit

CR: 8 XP: 4,800

N Large aberration

Init.: +2 Senses: darkvision 60 ft. Perception: +21

Defense

HP: 125

EAC: 20 KAC: 22

Fort: +10 Ref: +10 Will: +9

Offense

Speed: fly 60 ft. (Su, clumsy)

Melee: tentacle +19 (1d6+14 B) or ethereal tentacle +19 (1d6+14 C)

Offensive Abilities: None

Statistics

Str: +6 Dex: +2 Con: +0 Wis: +4 Int: -2 Cha: +0

Skills: Acrobatics +16 (+8 to fly), Survival +16

Languages: Aklo; telepathy 100 ft.

Ecology

Environment: any vacuum (Material and Ethereal Planes)

Organization: solitary

Special Abilities

Dual Existence (Su) A twinsoul exists simultaneously on the Ethereal and Material Planes, occupying both planes at the same time. These two forms are always coterminous with one another, and if the twinsoul is reduced to 0 Hit Points on either plane, it dies. Because of its dual existence, as a move action a twinsoul can grant itself the benefit of flanking one target within its reach until the start of its next turn. Ethereal Vulnerability (Ex) A twinsoul takes half again as much damage (+50%) from kinetic attacks against its ethereal form originating on the Ethereal Plane. It also takes half again as much damage from force effects. Planar Melding (Su) Once per day as a standard action, a twinsoul can meld its two forms until the start of its next turn, phasing slightly out of existence. While melded, a twinsoul has concealment and can pass through solid objects (excluding force effects such as force fields) on the Material Plane as long as it ends this movement outside any object. When the twinsoul returns to normal, it regains 8d6 Hit Points.