Candle of Potency

Wondrous item, very rare
  Angel’s tearwax is formed of fat rendered from creatures naturally resistant to magic, and infused with tears extracted from the eyes of celestials. Emulsified in a solution of holy water, this candle blooms with holy energy when lit, inhibiting harmful magic.
  When found, a candle of potency has 2d4 + 2 charges.
  As an action, you can light the candle, expending 1 charge and causing it to cast bright golden light in a 30-foot radius sphere for the next 10 minutes. If the candle remains lit after this duration elapses, an additional charge is consumed and the effects continue for another 10 minutes. For the duration, each creature in the area has advantage on saving throws against spells and other magical effects. Additionally, when an affected creature succeeds on a saving throw made against a spell or magical effect that allows it to make a saving throw to take only half damage, it instead takes no damage if it succeeds on the saving throw.
  A creature can use its action to snuff out a candle within its reach that isn’t being held by another creature. If the candle is held by another creature, the creature trying to snuff out the candle must succeed on a Strength (Athletics) or Dexterity (Sleight of Hand) check contested by the holding creature’s Strength (Athletics) or Dexterity (Acrobatics). The candle’s effects end immediately when the candle is snuffed out.