A sick creature has disadvantage on Constitution checks and saving throws, and their movement speed decreases by 5 feet.
The DM rolls 1d4 or chooses one of the following depending on the source of this condition. The creature gains disadvantage on Athletics checks on a 1, Acrobatics checks on a 2, or Stealth on a 3. On a 4, the DM rerolls the first d4, as well as an additional d4, following the above rules.
DC 12 Constitution saving throw at the end of each long rest, ending this effect on a success.