Wither Cloak Sword

The is an  Sword obtained from The Catacombs - Floor VII. Its ability blocks incoming damage at the cost of a percentage of the user's mana.

Obtaining
The Wither Cloak Sword can be obtained from Dungeon Reward Chests in The Catacombs - Floor VII. It costs to open.

Usage
The Wither Cloak Sword can be used as a melee weapon. It requires Catacombs level 7 to use.

Right-clicking with it in hand toggles the Creeper Veil ability. Toggling on the ability does not cost mana, but has a 1s cooldown between activations; the ability remains active even when swapping away from the sword. When the ability is active, 6 invisible Charged Creepers surround the player. The player cannot attack using melee weapons or magic weapons when the ability is active; bows and other abilities will still work. Upon taking damage, it is nullified at the cost of 20% of the user's mana. This mana cost is affected by. Should the player not have enough mana to absorb another hit, the veil will automatically toggle off.

Lava in Necron's boss room will still have its launching effect when its damage is nullified by the veil. If the player switches Armor with the ability active, it will be toggled off.

Essence Crafting
This sword can be upgraded with wither essence.

Trivia

 * The ability will persist even when the sword is removed from its user's inventory.
 * If a different weapon with is held with the ability active, its mana cost reduction will apply upon taking damage. If the Wither Cloak Sword has the  ability, it only applies its cost reduction while the Wither Cloak Sword is held.
 * During the Trial of Fire, the Creeper Veil ability will trigger as long as the player's maximum health is above that of a single fire tick, preventing all damage. If the player has sufficiently high HP (higher than 35,280) and enough mana to survive the ticks (use a Mana Flux Power Orb or as mentioned above), level 30 can be completed.
 * It was used in an exploit with a pickaxe to kill Ice Walkers while AFK. However, since the damaging effect of the veil has been removed, this exploit no longer works.
 * Sometimes, the charged creepers from the veil will persist if the user leaves the server while the veil is active. These charged creepers can be locked on to by the Flower of Truth, but otherwise have no effect.
 * Certain player interactions, such as shooting the veil with Runaan's Bow, can destroy the creepers.
 * Previously the Wither Cloak Sword's ability dealt damage (200 per second, depending on combat and Giant Killer level), but this was changed in the 0.11.3 update.
 * The Creeper Veil ability is able to nullify the damage from the Yang Glyphs in the Voidgloom Seraph boss fight, making it possible to semi-afk these bosses in combination with a Necromancy weapon.