Greywalkers are people who live in the shadowy grey world between Life and Death. Living in between they can see both the bright living soul and cooling dead ones. They also now see the things that go bump in the night and the things those that don’t understand call magic.
And if you can see those things, they can see you too…
Greywalkers need to die physically or metaphorically.
They need a strong reason to die and a strong reason to live. A person with a death wish but has unfinished emotional business is such a person. These two are in mutualy opposion.
See across the line: nearly automatic when things are in the grey zone.
Travel: move your attention and most of you to one side or another. This can let you move "though walls", as the other side may or may not have corresponding elements.
Cross: completely move your form across the line so it no longer interacts with that other world. It makes you immune to things of that world.
Shroud: Invisibility to one side or the other.
Bring: to move someone or something across.
Banish: to move something back to its home side.
Most of these powers cost extra if you are on the wrong side, so you end up having to travel or cross.
Longer you stay in one side, the harder it is to stay there. You need time in the other side to recharge (reset the modifier)
If you stay overly long, you get stuck, and things go bad. Now you have to get to the other side or you will discoporate or just go mad.
This system works best with a manna point system 3-18 points of POW that measure the magic of the soul.
This means you need to be smart how you spend your limited resources.
Skill system works best
Creatures on the other side, in Greywalker terms
Astrmorph vampires, madness creatures, were creatures (violence), succubi (lust), and other things that have needs. They effect the living, changing their behavior some, to create conditions that create energy for them.
Eventually these creatures anchor themselves to living beings, who become their pawns and material hands.
Eventually those pawns gain greywalker powers.