Crystal Interface

D&D 2024 item: Crystal Interface. Source: Fumble. type Weapon, Legendary rarity, Requires attunement, properties Finesse, Reach, damage 1d6 Psychic Legendary whip, requires attunement Attunement To attune to this item, a slippery metal serpent coils around your neck and drives one end into the back of your skull, dealing 10d10 Piercing damage. Ending Attunement deals damage again when you remove the spike. Life Cost While the interface is in you, your maximum Hit Points are reduced by 1 per character level. Interface Whip You can use the interface as a weapon. It grants a +2 bonus to attack and damage rolls, but attacks against Aberrations have Disadvantage. A creature hit by it takes an extra 1d6 Psychic damage. On a natural 20, the Target is Stunned until the end of its next turn. It has Finesse, Reach, and Slow mastery (-10 feet). Crystal Connection As a Bonus Action, you can connect to the Crystal while within 5 feet of it. You can expend a spell slot to reduce the DC of a Crystal skill check by twice the slot level. Alternatively, you can deal unavoidable Necrotic damage equal to 5 per point of reduction. This damage also reduces your maximum Hit Points until the next Long Rest; Greater Restoration or Heal repairs it immediately. Sacrificial Conduit You add +2 to the DC of the Crystal's spells and effects. You can choose to take 10d10 Necrotic damage instead of suffering the Crystal's critical failure effect. Shared Burden Within 1 minute, you can connect one other willing or Incapacitated creature to the interface. When the connection succeeds, that creature takes 4d10 damage and is Grappled by you. The connected creature takes the life-cost damage from Crystal Connection instead of you. Requires attunement Weapon Legendary Finesse, Reach