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Published by Samuel Penn.

Also, see my profile for things that interest me.

Glendale Website - My main web site.

Yags - Main site for yet another game system, a generic GPL'd tabletop RPG.

Yagsbook - Documentation on the Yagsbook RPG documentation format, a Sourceforge project.

Mapcraft - Documentation on world mapping tools, another Sourceforge project.

Midnight Saga - An Ars Magica campaign.

Active Topics

The current topics are currently under active development (relatively speaking).

Yags is Another Game System - Game design notes for Yags, a Free roleplaying game system I use as the core system for most of my campaigns.

Yagsbook - Notes on an XML based documentation system I use for documenting Yags and related campaigns.

Full Thrust - Notes on Full Thrust

Stargrunt - Notes on Stargrunt.



This is the ability to control and alter your body and general metabolism. You can fight off poison and infection, increase strength and endurance, and shrug off damage. Highly skilled and powerful individuals can also regenerate and cheat death.

Raw Ability

If you have the Alteration ability, then you gain the following unconscious bonuses regardless of your skill.

  • Add your Power to any Health checks made to stay alive and conscious

Basic Skill


At a cost of one Exhaustion, turn one Wound into a Stun. Takes one hour, and the difficulty is Health x Alteration of 10 x current number of wounds.


yags/psionics/alteration.txt · Last modified: 2015/02/04 22:40 (external edit)