A gas that makes the character unable to do anything except Laugh.
The character must make a Toughness (-10) test or be affected by the gas.
The character cant do any actions fore 1d5 rounds and takes 1d10 damage each round, that´s not affected by armour or Toughness.
Each round the character can make a new Toughness (-10) test to resist the gas.
A gas made from the inside of a (Blue) spiked flower from the hidden planet.