On Fire
A character that is On Fire is dealt a cumulative 1d6 points of damage every round. By making a DC 15 Reflex Save, a character can negate the increase of the fire damage. For every 5 points that the save check exceeds 15, the damage is reduced by one die. If the number of dice is reduced to zero, the character is no longer on fire.
For Example, Roland accidentally lights himself on fire with a torch, and he is dealt 1d6 points of Fire damage the first round. The next round, he fails his Reflex Save and is dealt 2d6 points of Fire damage. The third round, he rolls a 16 on his Save, meaning the damage doesn't go up, but he is still dealt 2d6 points of Fire damage. Finally, on the fourth round, he rolls a 25 on his Reflex Save and reduces the damage by two dice, putting himself out.