The three specializations of the Elemental Archanist are described in detail in this document. Each area represents a specific type of elemental energy that the archanist can use: Cold, Fire, and Lightning. The spell abilities described in this document are similar in many ways to regular spells, but there are a few differences. Any are that prevents the casting of spells will also prevent the casting of these spell abilities, but creatures that can detect the casting of spells will not detect the use of these spell abilities as spells. Creatures immune to spells or spell magic are immune to these spell abilities as well, but bonuses to saves that apply specifically to invocation magic or to elemental magic, such as a bonus of +1 to save vs. all types of invocation spells, are not applicable to these spell abilities. Finally, some of these spell abilities can be cast quickly with an increased PPE cost. A spell cast quickly only takes a single melee attack and does not count towards the maximum number of spells that the Elemental Archanist can cast per melee round, which is usually two per melee round. Only spells that specifically state a PPE cost to cast the spell quickly can be cast in this way.
Each head of the Hydra creature can be attacked and with enough damage a head can be destroyed. When all heads are destroyed, the Hydra will retreat through the portal and the portal will close, ending the spell. At twelfth level, the summoned Hydra will have four heads, each head has a Natural Armor Rating of 14, 50 S.D.C., and each fire bolt will inflict 1D4x10 points of fire damage and has a bonus to strike of +6. With each additional level of the caster, the Hydra will have an additional head, each head will have +15 S.D.C., and will inflict +10 points of fire damage. For example, a fifteenth level Elemental Archanist would summon a Hydra with six heads, each head would have a Natural Armor Rating of 14 and 80 S.D.C., and each fire bolt shot by the heads would inflict 1D4x10+20 points of fire damage with a range of 300' (91.4 m) and a bonus to strike of +6.