Venomous Air

These are clouds of nigh-undetectable poisons that hang in the air and amplify other poison attacks.

    Effect: When a creature within an area of venomous air is hit with a poison attack, it takes 1d6 extra poison damage per tier.
    Usage: Use venomous air in an encounter with a large number of weaker creatures or minions that have poison attacks to turn them into a greater threat.

Published in The Plane Above, page(s) 87.