Wither anyone?

[Rexftw]

has anyone found this skill? i cant find any site that lists it. thanks.

[Herthbul]

Perdition Rock on a Phantom boss called Ignis Effigia

[Hart]

Perdition Rock on a Phantom boss called Ignis Effigia

D'oh, I just told someone it was Malus whatever and it's apparently Ignis whatever? Bah.

I'll add a little more info here - Perdition Rock is the area just outside Ember Light Camp on the Fire Island chain. This is past the Southern Shiverpeaks, which are past the Crystal Desert, so you're looking at pretty late game stuff here and AFAIK it can't be captured sooner.

This boss spawns in the same area as the <deity's> Cursed bosses. Take a right out the door, head along the coastline for the peninsula and take a left around the large rock outcropping. If you hold down CTRL as you approach you should be able to see the name of the boss before you walk all the way there.