Wind Trap

''You meticulously trace the path of the area to be trapped. As you complete the pattern, you smear yourself with the dried egg yolk, and bury the bronze sun dial in the ground.''

This spell traps a large area, and the trap is triggered by certain conditions that you must define ahead of time. When the conditions that you specify are met, the trap discharges, creating a cloud of fumes 30 feet high. You can designate these fumes to duplicate stinking cloud, cloudkill, acid fog, or incendiary cloud, or you can use this cloud to distribute a contact or inhaled poison used as a material component.

Casting this spell is a largely mental process; you slowly walk the area to be trapped for ten minutes, envisioning the rising fumes and deciding on the conditions that will trigger its activation. When the meditation period ends, you may leave the area and the trap remains set for 1 year.

You set the conditions under which a creature in the area will trigger the trap. The conditions may be as simple or as complex as you like, and they cannot be changed once the spell is placed; the caster should be careful about the wording lest the trap trigger unintentionally. Some possible conditions are: whenever anyone steps foot in this grove, whenever a templar draw his or her weapons. When the condition is met, the area is engulfed in fumes, and everyone inside is affected. The fumes dissipate after 1 round per caster level. A moderate wind (11+ mph), such as from the gust of wind spell, disperses the trap in 4 rounds. A strong wind (21+ mph) disperses the trap in 1 round.