Wither Craft Core by Davidson33, JellyKuso
Custom mod for Hexx Reloaded, We're always looking for ideas and hope you have any, Let us know!
Wither Mod by ninja_shatter
This mod adds WitherOre to the Nether, plus WitherIngots, WitherDust, wither tools and weapons with wither effect
Wither Shards by Sterling Mods
A stand-alone mod for an intermediate Nether Star item. Possible uses include mini-boss and quest rewards. The Nether Star Shard has no special power or health benefit, it is only an intermediate item to obtain Nether Stars.