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CORE RULES · v5.7
Equipment
Adamantine ArmorAdaptive HelmAlchemy JugAlchemy Jug (Blue)Alchemy Jug (Orange)Amulet of Proof Against Detection and LocationAmulet of the DrunkardArmor Of Fungal SporesArmor Of The FallenArmor Of WeightlessnessBag Of BountyBag of HoldingBag of TricksBalance of HarmonyBalloon PackBanshee's VeilBilgewater CutlassBlasted GogglesBlood of the Lycanthrope AntidoteBlood SpearBloodrage GreataxeBoomerang ShieldBoots of ElvenkindBoots of Striding and SpringingBoots of the VigilantBoots of the WinterlandsBottled BreathBracers of ArcheryBrooch of Living EssenceBrooch of ShieldingBroom of FlyingCap of Water BreathingCard Sharp's DeckCirclet of BlastingCirclet of Human PerfectionCloak of ElvenkindCloak of ProtectionCloak of the Manta RayCoiling Grasp TattooCracked DriftglobeCursed LuckstoneDecanter of Endless WaterDeck of IllusionsDeck Of MiscellanyDeck Of WonderDried LeechDriftglobeDust of CorrosionDust of DeliciousnessDust of DisappearanceDust of DrynessDust of Sneezing and ChokingEarwormEcho StoneEldritch Claw TattooElemental GemEmerald PenEversmoking BottleEyes of CharmingEyes of Minute SeeingEyes of the EagleFabulist GemFeywild ShardFinder's GogglesFlask of Perpetual BoozeGauntlets of Ogre PowerGem of BrightnessGlamerweaveGlove of BlastingGloves of Missile SnaringGloves of Swimming and ClimbingGloves of ThieveryGoggles of NightGoggles of Object ReadingGuardian EmblemGuild SignetHarkon's BiteHat of DisguiseHeadband of IntellectHellfire WeaponHelm of Comprehending LanguagesHelm of TelepathyHelm of Underwater ActionHouse Of CardsImmovable RodInfernal Puzzle BoxInquisitive's GogglesInsignia of ClawsJavelin of LightningKeoghtom's OintmentLantern of RevealingLiving GlovesLorehold PrimerMariner's ArmorMask of the BeastMedallion of ThoughtsMind Carapace ArmorMithral ArmorMizzium ApparatusMummy Rot AntidoteNature's MantleNecklace of AdaptationNight CallerOil of SlipperinessPaper BirdPearl of PowerPeriapt of HealthPeriapt of Wound ClosurePhilter of LovePipes of HauntingPipes of the SewersPiwafwiPixie DustPlate Of Knight's FellowshipPortal CompassPotion of AdvantagePotion of Animal FriendshipPotion of Fire BreathPotion of GrowthPotion of PoisonPotion Of PolychromyPotion of Psionic FortitudePotion of ResistancePotion of Water BreathingPrismari PrimerPropeller HelmPsi CrystalPyroconvergerQuandrix PrimerQuiver of EhlonnaRing of JumpingRing of Mind ShieldingRing of ObscuringRing Of Puzzler's WitRing of SwimmingRing of the OratorRing of Truth TellingRing of WarmthRing of Water WalkingRings of Shared SufferingRobe of SerpentsRobe of Useful ItemsRod of Mercurial FormRod of RetributionRope of ClimbingSaddle of the CavalierSeeker DartSending StonesSensory StoneSentinel ShieldSerpent Scale ArmorShatterspikeShield Of The TortoiseSilverquill PrimerSkyblinder StaffSling Of Giant FellingSlippers of Spider ClimbingSmokepowderSoul CoinSpies' MurmurStaff of the AdderStaff of the PythonStone of Good Luck (Luckstone)Stone of Ill LuckStorm BoomerangSword of VengeanceThessaltoxin AntidoteTrident of Fish CommandWand of EntangleWand of Magic DetectionWand of Magic MissilesWand of SecretsWand of WebWeapon of WarningWheel of Wind and WaterWildspace OrreryWind FanWinged AmmunitionWinged BootsWingwearWitherbloom Primer
Weapon (any) · Uncommon

Weapon of Warning

Source: Dungeon Master's Guide
Weapon (any), uncommon (requires attunement)

This magic weapon warns you of danger. While the weapon is on your person, you have advantage on initiative rolls. In addition, you and any of your companions within 30 feet of you can't be surprised, except when incapacitated by something other than nonmagical sleep. The weapon magically awakens you and your companions within range if any of you are sleeping naturally when combat begins.