Sunday, January 2, 2011

Campaign Design - Spells: Gas Cloud

Gas Cloud (from Relics & Rituals)
Conjuration (Creation)

Level: Sorcerer/Wizard 3
Components: V, S
Casting Time: 1 standard action
Range: Medium (100 feet + 10 feet per caster level)
Target, Effect, or Area: Fog spreads 30-feet wide, 20 feet high
Duration: 10 minutes per caster level or until discharged
Saving Throw: Reflex half
Spell Resistance: Yes

Gas cloud creates invisible vapors whose most dramatic property is to explode whenever any type of flame is brought into its area. Whenever a flame, whether magical or normal, is brought into its area of effect, the gas cloud will explode, doing 1d6 points of damage per caster level (maximum 10d6), with a Reflex save for half damage. If a fire-based spell, such as fireball, is cast into gas cloud's area, resolve both damage effects separately.

Creatures entering a gas cloud or coming within 5 feet of one may make a DC 18 Wisdom check to notice the faint odor of the gas cloud's vapors. Creatures with the scent ability will automatically detect the gas cloud, though they won't necessarily know what it is.

Like cloudkill, gas cloud's vapors are heavier than air and will settle into the lowest point within the area of effect, seeping down into grates or chimneys, for example.

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