Beagalltach: Ripples of Passion (ベガルタ, Begaruta?) is one of the armaments gifted to Diarmuid Ua Duibhne by the Sea God Manannán. It takes the form of a short sword. Diarmuid uses this sword not as his main weapon, but as his sub-weapon. It is a defensive Noble Phantasm that increases Diarmuid’s defensive power, and his overall combat performance when he handles it alongside his first Noble Phantasm – the magic sword Moralltach.
In Fate/Grand Order, it is registered as a B+ Rank Skill.