Flint of Phenax

Wondrous item, uncommon

Price: 100-500 gp | low sentimentality

Campfires, torches, and candles lit with this flint shed bright light and heat for 30 feet but aren’t visible and can’t be felt by anyone standing farther than 30 feet from them. The effect doesn’t conceal objects or creatures around the flame—it simply doesn’t illuminate them.

Paid

With the flint in hand, you can use an action to have it ignite a candle, torch, or campfire without any skill checks.

Overpaid

With the flint in hand, you can use an action to have it extinguish a candle, torch, or campfire up to 30 feet away.

Source: The Gray Merchant of Asphodel