Wither Rune

The Wither Rune is an item used primarily as ammunition for staves.

Rune Shrine
Using Unpowered Runes or Charged Runes on a Rune Shrine that is centered on a Wither Rune Shrine, will convert those Runes into Wither Runes. The player can only convert Runes into Wither Runes if their Runation level is 30 or higher.

Mob Drops
Wither Runes can be obtained as a drop from the following mobs:
 * Nethengeic Wither
 * Okazor
 * Shadowlord
 * Wither

Rune Box
Wither Runes can be found when opening a Rune Box.

Rune Randomizer
Using Unpowered Runes or Charged Runes on a Rune Randomizer has a chance to convert them into Wither Runes.

Ammunition
Wither Runes are required as ammunition for the following Staves: Additionally, Runic Sword can consume Wither Runes when attacking to wither mobs on hit.
 * Lyonic Staff
 * Primordial Staff
 * Shadowlord Staff
 * Wither Staff

Banner Pattern
Crafting a Wither Rune with a vanilla Banner and a dye will give the Banner a pattern that resembles the Wither Rune's symbol.