Sixty blows rained on the Stolen Angel in a fraction of a second, each with power enough to pierce space casually!
The creature burst from the might that met it, and turned into shards of light that Replicus was sure would reform sooner rather than later.
According to Serenity, the Attegoth had become the bearer of all of Skullius' skills, but he imagined that the two probably couldn't use the same skill at the same time. If they could, at the very least, one would have a lesser version of the ability. This would explain why Skullius had a smaller [Heart of Revelation] over his head while the Stolen Angel had a larger one; the Angel was also the one predominantly making use of it.
As for how the Stolen Angel managed to recover from being frozen in Absolute Frost…
'As long as he carried a shadow and was embraced by the dark, he would never know any harm. He would never die.'
This was what Skullius had said just earlier.