Custom Blood Magic: Ritual

       This ritual allows the caster to create an item that, while powered
by wielders blood, will temporarily strengthen the barriers between
the physical plane and all other planes of existence.   The
Thaumaturge must create a mixture with seven traits of his blood (and
one trait of blood of anyone else he wants to use the item) and
powdered angelite.  He must then soak a one inch diameter sphere of
jade in the mixture in a iron bowl over a period of seven days
chanting over it at least one hour a night in moonlight reflected from
a circular mirror.  The stone will absorb the mixture by midnight of
the seventh night and turn a sickening black color that seems to swirl
with life.  Record the casters mental traits at this time.  The stone
will remain enchanted until destroyed.
       To activate the ritual the caster (or anyone who donated blood to the
casting) spends a blood while holding the stone to his left eye,
placing his right hand on the ground and humming.  Effects last one
hour and are in effect within one hundred feet of the point of
activation.  All creatures not native to the physical plane must make
a static test of their Willpower vs. casters mental traits when the
stone was completed (which should be recorded on the item card); WP is
their only retest and overbid may be called for the ritual.  If they
lose this test they are forced to return to their native plane.  Any
being not on the physical plane must win this same static WP test for
any action in which they wish to interact with or observe the physical plane.
Furthermore, natives of the physical plane may not travel to any other
plane while this power is active; any power used to do so automatically fails.