Eidolon ни на что не годится, кроме как носить тасс.
Кстати, в эррате это исправили.
Eidolon: Replace this spell with
Eidolon (Prime •••••)
Practice: Making
Primary Factor: Potency
Cost: 1+ Mana
Suggested Rote Skills: Academics, Crafts, Occult
Where disciples of Prime can create platonic objects by forcing Mana into the pattern it wears within tass, a master can create the complex Prime patterns within living beings and the environment. When fuelled with Mana, this spell creates an obviously-magical construct much like Platonic Form, except that the construct is not limited to single physical objects. Eidolons may imitate fire, fog, and even entire environments, but most masters use it to create "living" constructs. Eidolons are still made of solidified Mana, have Durability and Structure instead of Health, and when mimiking environmental hazards do not inflict damage as they do (Eidolon fire does not burn, for example.) They follow the Potency rules for Platonic Form (p.169) but Potency may also be allocated to grant dots of the Retainer Merit.
Though animate, the construct is mindless. If used as a Retainer, the Eidolon’s “field” includes simple physical labor, combat, and other uncomplicated tasks. The Eidolon can only execute whatever order the caster gave it last. Orders must be very simple. If attacked, the Eidolon has no Defense.
Unlike Platonic forms, Eidolons do not crumble when all Mana is withdrawn. A mage may refill the Eidolon as per Platonic Form. When the spell's Duration runs out, any unused Mana sublimates back into the world and is lost.
Add Forces ••• The construct is not obviously magical.
Add Mind ••••• The construct may be given a mind of its own. See p. 165 for details.