OOC: No you are mistaken silveroak.
The guidelines is this, Core rulebook p.161:
Ward the target against creatures with Might less than or equal to the
level of the spell. A creature warded against cannot directly affect
the target physically or by magical means. A spell of this nature will
only ward against creatures from one Realm (Divine, Faerie,
Infernal, or Magical). Note that wards against magical and faerie
creatures can also be constructed using other Forms, but that those
wards are more limited in effect. (Touch, Ring, Circle)
The touch, ring and circle is already included in the guideline. You will notice that circular ward against demons as only base spell listed, with no modifiers and has touch ring and circle, which support my claim.
There are more informations on wards at p.114.
MAGICAL WARDS
Rego spells can create wards which protect the target from things of the appropriate
Form. These use the normal targets, but the target is the thing protected, rather than the
things warded against, and the range is the
range to the target, not to the things warded
against.
Wards with a Circle target are of particular note. They prevent things warded against
that are within the circle from leaving, and prevent things warded against that are outside
from entering. Warded things cannot act across
the circle, no matter which side they are on,
nor can they damage the circle, directly or
indirectly. It is quite common to create such
spells with a duration of Ring, as then the ward
can be made to last indefinitely, with care.
However, this is not required, and the spell can
be created with any duration.
The spell guidelines for wards against
magical things are listed with a base range of
Touch, base duration of Ring, and base target
of Circle, because a ward with these parameters
wards against creatures with a Might equal to
or less than its level. The parameters of the
spell can be changed in the normal way, so that
a ward which only protected the magus (Range
Personal, Target Individual) for a duration of
Moon would have the same final level
it is written as ReVi 30 (Base 15, +1 Touch, Circle, +2 Ring), so there is no ambiguity to the range and target, but it really ward against faeries up to level 30. You can check on the main board if you want to, but the rules as written are clear in my opinion.