Flame Weapon (enhancement)

Source

2-core enhancement

simple or martial melee weapon

This weapon glows as a lit torch, and while charged white runes light its surface. The air around it is always warm, and while the weapon is on one's person one can tolerate extreme cold without difficulty.
     This weapon has 4 charges. Every attack with it expends one of the remaining charges, regardless of whether or not the attack hits or misses. When the wielder hits a creature with this weapon while expending a charge, the creature is ignited for 2d6 fire damage until the end of the wielder's next turn. A creature with resistance to fire damage can't be ignited by this effect.
     After no attack has been made with this weapon for 1 minute, it fully regains its charges.