This potion bestows magical invulnerability to all forms of normal fire (such as bonfires, burning oil, or even huge pyres of flaming wood) upon the person drinking it. 

It furthermore gives resistance to such fires as generated by molten lava, a wall of fire, a fireball, fiery dragon breath and similar intense flame/heat. 

All damage from such fires is reduced by -2 from each die of damage, and if a saving throw is applicable, it is made at +4. 

Note: If but one-half of the potion is consumed it confers invulnerability to normal fires and half the benefits noted above (-1, +2). 

The potion lasts 1 turn, or 5 rounds for half doses.