On Fire

You are on fire. At the start of your turn you suffer the On Fire damage dice, then attempt a Dodge Check with DC 12 + number of On Fire damage dice to try to put it out.   If you succeed, you reduce the number of On Fire damage dice by 1, +1 for every 5 by which you succeed. The fire is put out when the damage is reduced to 0 dice.   If you fail, the fire grows, increasing the On Fire damage dice by 1 (or 2 on a crit fail).   Naturally, submerging yourself in water puts out the fire. Dousing yourself in water automatically removes one On Fire damage die per liter of water used.  

Inanimate Objects

Inanimate objects that are On Fire suffer 1 Dent per fire die if they are flammable, and always fail their Dodge Check by 1