|Mac an Luin|
|Title:||Undefeated Violet Flower|
|Transliteration:||Muhai no Murasaki Utsubogusa|
A+ (F/GO rank-up)
A spear which can auto-attack and nullify mental disruption. Upon activation, it shoots a stream of water, an element Nuada controls, towards the enemies.
The name originated from Fionn's sword, but it is often seen as the same as his god-slaying spear. Thus, when materialized as Noble Phantasm, they are morphed together.