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  • Keybrand item spriteold Keybrand item sprite
Stack digit 1.png
Damage105 / 55 (Melee)
Knockback6.5 (Strong) /
6 (Average)
Critical chance20% / 4%
Use time20 (Very fast) /
22 (Fast)
TooltipDeals more damage to injured foes
RarityRarity level: 8
Research1 required
Obtained from Obtained from
The Keybrand attacking a Target Dummy and a Mimic. Note the increasing damage based on the enemy's health.
The Keybrand attacking a Target Dummy.

The Keybrand is a Hardmode, post-Plantera sword. It has a 0.5*1/200 (0.5%) / 1*399/40000 (1%) chance of being dropped by Blue Armored Bones, Hell Armored Bones, and Rusty Armored Bones in the post-Plantera Dungeon.

The Keybrand deals increased damage against previously injured enemies. When hitting enemies that have less than 10% health remaining, it deals a maximum of 150% additional damage for a total of 250%. Striking any enemy with the Keybrand will cause a sparkling visual effect.

Its best modifier is Legendary.


  • The Keybrand has a base 20% critical strike chance as opposed to the usual 4%.
  • The following formula is used when determining the amount of damage that will be dealt:[1]
    • If the hit enemy has more than 10% HP: \mathit{Damage} \times \left(1 + \frac{5}{3} \times \left(1 - \frac{\mathit{HP_{Current}}}{\mathit{HP_{Max}}}\right)\right)
(This means, for every 1% of the enemy's health missing, the damage will be increased by \frac{1}{60}.)
  • If the hit enemy has less than 10% HP: \mathit{Damage} \times 2.5
  • In Don't dig up and Get fixed boi worlds, the Keybrand receives the following changes:
    • Switched place with Katana. As a result, it is sold by the Traveling Merchant, instead of dropped by Hardmode Dungeon enemies.
    • Damage decreased from 105 to 15.
    • Value decreased from 20 to 10.


Achievement Robbing the Grave.png
Robbing the Grave • Obtain a rare treasure from a difficult monster in the dungeon.
Obtain a rare item from an enemy in the post-Plantera Dungeon.


  • The Keybrand's ability to do more damage against previously injured targets makes it an exceptionally good choice against slow-moving, high-health targets such as Nailhead or the Ogre.


  • The Keybrand is based on the Keyblade, a weapon used in the action role-playing game series Kingdom Hearts. It bears an especially strong resemblance to the Keyblade named the Kingdom Key, which Sora wields.
    • The Keybrand's visual effects when striking enemies are likely a reference to similar bright effects that appear when striking enemies with the Keyblade throughout the Kingdom Hearts series.
  • Despite being a key, it does not unlock anything.


  • Desktop 1.4.4:
    • Damage increased from 85 to 105.
    • Bonus critical chance increased from 17% to 20%.
    • Reduced the maximum power of the scaling damage effect.
  • Desktop
    • Damage increased from 70 to 85.
    • Now deals up to 150% more damage based on how injured an enemy is.
  • Desktop
    • Can now autoswing.
    • Damage increased from 55 to 70.
    • Knockback increased from 6 to 6.5.
    • Critical strike chance increased from 4% to 17%.
    • Use time decreased from 22 to 20.


  1. Information taken from the Desktop version Desktop source code, method ItemCheck_MeleeHitNPCs() in Terraria.Player.cs. There may be inaccuracies, as the current Desktop version Desktop version is