Tween

Tweens were parasitic spirits endemic to the Ethereal plane, though they were not a type of undead.
==Description==
When not attached to any host, tweens appeared on the Border Ethereal to those on the Prime Material plane as smoky or shadowy humanoid silhouettes. Typically this was reminiscent of a squat human.
==Personality==
Tweens were very intelligent spirits, but they lacked goals or independent purposes.
==Abilities==
Tweens possessed a limited form of shapechange and could only be harmed by creatures who could enter the Ethereal plane or had some magical effect like oil of etherealness. While attached to a host, they could move material things at short distances.
===Bonding===
All tweens sought out creatures on either the Prime Material or ethereal plane to bond with, having a preference for intelligent ones. They often took hosts that were humans or demihumans.
Once a suitable host was found, tweens would shadow their target's every move. When this bonding action truly began, it would appear as a vaguely visible shadow adjacent to their host's own. After several hours, the bonding became permanent, with neither the tween nor their host being capable of voluntarily severing it. If a tween's host were to die, it would cause such grief and shock for the spirit that it would fission into two tweens.
===Probability===
Tweens had the ability to subtly alter probability in the vicinity of their host, which extended out to roughly , and they could see a few seconds into the future. Through these combined abilities a tween granted their host greater luck. However, this positive probability was robbed from others within their host's vicinity, whether they be enemies or allies, afflicting them with bad luck.
==Combat==
Tweens fought independently of their hosts when attacked on the Ethereal plane. They typically fought with some ethereal form of weapon, like a sword. Otherwise, they mimicked the actions of their hosts in combat.
==History==
Some scholars suspected that tweens were once members of a race that inhabited the Outlands known as the kyleen, who had fled to the ethereal plane after a strange chaos plague transformed them.
In the , tweens were known to be lurking around the Shadowdale region.
In the , a group of Beshabans operating a shrine in the sewers of Ravens Bluff, that included Cleo of Bad Luck and Tinsel Reltether, were all hosts to tweens.
==Society==
===Languages===
Tweens were capable of communicating telepathically with their host.
===Relationships===
Creatures bonded with tweens were considered a mixed blessing by those around them. This often led to the host becoming an outcast.
==Trivia==
* Zunzalor's harp could make a tween clearly visible, outlined by blue radiance.
==Appendix==
===Appearances===
===References===
Category:Creatures found in the Ethereal Plane
Category:Parasites
Category:Spirits