Stinking Cloud (Arcana) [Air]
Level: Mage 3, Alienist 2
Mana: 6. Base Success: 75%.
  Creates a 30 foot (3 square) radius cloud of noxious vapors, causing all breathing creatures within the cloud to make a Fortitude save (DC 20) every round or suffer nausea for 2d4 additional rounds. Nauseated creatures cannot attack or cast spells and are considered off-guard for the purposes of sneak attacks. The caster is not immune!