[PnP] Invisibility spell

[J Hooten]

Invisibility ALIGNMENT —Varies
The spell is cast, by the Caster, on himself. It effects him and any
person or thing that is in contact with any portion of his body.
It has no effect on the surface that the Caster walks on. Persons
that are made invisible by contact with the Caster become visible
when this contact, or the duration, ends. All persons that contact
the Caster, or any item held by him, during the Duration can see
him whether contact is maintained or not. Per person that comes
into contact with the Caster, reduce the Duration by 1 turn.
DURATION — (EL+1)£5 turns.

I always thought that was quite clear.
Once you have touched the enemy he can see you from then on.
It also reduces the duration which will limit how many targets you get.

But if the Invisable is an archer it gets much harder as there is no 
contact.

The big problem is that first attack has a high chance of deadly or 
worse, but it can always oops and not do much damage.