Ascendant Dragon's Wrath Flail

{
  "dmg1": "1d8",
  "name": "Ascendant Dragon's Wrath Flail",
  "page": 25,
  "type": "M|XPHB",
  "__prop": "item",
  "rarity": "legendary",
  "source": "FTD",
  "weapon": true,
  "weight": 2,
  "dmgType": "B",
  "edition": "one",
  "entries": [],
  "mastery": [
    "Sap|XPHB"
  ],
  "baseItem": "flail|xphb",
  "_baseName": "Flail",
  "_category": "Specific Variant",
  "reqAttune": true,
  "_baseSrd52": true,
  "_baseValue": 1000,
  "_entryType": "weapon ({@item Flail|Xphb})",
  "_textTypes": [
    "martial weapon",
    "melee weapon"
  ],
  "_attunement": "(Requires Attunement)",
  "_baseSource": "XPHB",
  "_isEnhanced": true,
  "bonusWeapon": "+3",
  "_fullEntries": [
    "This weapon is decorated with dragon heads, claws, wings, scales, or Draconic letters. When it steeps in a dragon's hoard, it absorbs the energy of the dragon's breath weapon and deals damage of that type with its special properties.",
    "Whenever you roll a 20 on your attack roll with this weapon, each creature of your choice within 5 feet of the target takes 5 damage of the type dealt by the dragon's breath weapon.",
    "You gain a +3 bonus to attack and damage rolls made using the weapon. On a hit, the weapon deals an extra {@damage 3d6} damage of the type dealt by the dragon's breath weapon.",
    "As an action, you can unleash a 60-foot cone of destructive energy from the weapon. Each creature in that area must make a {@dc 18} Dexterity saving throw, taking {@damage 12d6} damage of the type dealt by the dragon's breath weapon on a failed save, or half as much damage on a successful one. Once this action is used, it can't be used again until the next dawn.",
    {
      "data": {
        "item__mergedEntryTag": "mastery"
      },
      "type": "wrapper",
      "wrapped": {
        "name": "Mastery: Sap",
        "page": 214,
        "type": "entries",
        "source": "XPHB",
        "entries": [
          "If you hit a creature with this weapon, that creature has {@variantrule Disadvantage|XPHB} on its next attack roll before the start of your next turn."
        ]
      }
    }
  ],
  "_variantName": "Ascendant Dragon's Wrath Weapon",
  "_entrySubType": "martial weapon, melee weapon",
  "genericVariant": {
    "name": "Ascendant Dragon's Wrath Weapon",
    "source": "FTD"
  },
  "weaponCategory": "martial",
  "_valueFromRarity": 20000000,
  "_baseFreeRules2024": true,
  "_attunementCategory": "Requires Attunement"
}