Lets just say this now; Ghosts cannot directly touch the world of the living. That doesn’t mean it doesn’t happen. When it does it’s because of another source. Mechanically, Interaction is a cheap way to a character to boost their dice pool. A player can choose to push beyond the veil and affect the world of the living for this boost but they must describe what happens. Some suggestions of effects and appropriate bonuses follow, but feel free to make up your own.

Creating a cold spot      +1

Electrical Disturbances   +1

Creating an EVP            +2

Creating writing            +2

Hurting a living person   +3

Throwing Objects          +3

When creating your own Interactions the bonus should correspond with how adversely the character affects the living world. A character that only needs a small bonus can do simple “haunting” effects but for those that need a big boost for free they can hurt people or destroy places. One die bonuses should be things that aren’t easily detectable, something that would require special equipment or someone to be at the right place at the right time. Two die bonuses are things that anyone of the living could notice and likely be freaked out by. Three die bonuses are undeniable or painful for the living.  You can never gain more than three dice from Interaction, if the player comes up with a really clever interaction feel free to give them some bonus Æther (or just refund their Æther spent for the interaction).

Interactions aren’t free; they still cost Æther but far less Æther then normal. Any Interaction, regardless of bonus, coasts five Æther. It’s the same price as activating a Memory, but cheaper than pure Æther spending. Interactions can be used along with Memories, Investments, or dice gathered by spending Æther as long as the proper amount of Æther is spent.