The Cursed Flail-Core is an accessory that makes flail-type weapons have a chance to release a green spike ball upon hitting an enemy. This spike ball is larger than the thrown Spiky Ball and similarly rolls on the ground, constantly damaging enemies it touches by a percentage of the flail's original damage, and it lasts for a few seconds. The spiky balls also apply the Cursed Inferno debuff.
- 18.104.22.168: Increased debuff duration from 2 to 6 seconds.
- 22.214.171.124: Sprite updated.
- 126.96.36.199: Now deals damage based on percentage of flail's damage.
- 188.8.131.52: Introduced.