Attacking Mist
(Conjuration/Summoning)

Range:  10 yards
Components:  V, S, M
Duration:  1 round per level
Casting Time:  3
Area of Effect:  Special
Saving Throw:  None

This spell can summon a class II type of intelligent mist from the elemental plane of air. The creature is summoned when an event triggers the spell (similar to magic mouth). The spell attacks first person encountered. The mist will stop an attack after it has been summoned upon conditions set by the wizard.
The mist is actually a being from the elemental plane of air (albeit a low powered one). The difference between intelligent mists and other summoned creatures is that the mists actually have access to the knowledge of their summoner. This includes 1 language (chosen by the wizard) and information (not spells) dictated by the casting wizard.
For a detailed description of the different types of intelligent mists, see the monster description provided with the 5th-level magic mist. The instructions for the attacking mist must be written on a piece of paper (the material component of this spell), which must be burnt in the casting.
Whether the mist stops attacking or wins the battle, it will not return to its own plane until either dispelled or the spell duration expires.
For example, Raji casts an attacking mist spell. He states that a mist will be summoned when anyone comes into this room, and will cease to attack anyone who speaks his name.

