Bismarck.Josiahfk said:
»Gosh this animation is so badass lol

It's just physical damage Chaos Firestorm, c'mon Josi!
No. it's far far prettier and majestic than that!
It looks a lot less graceful when the fatties do it, though it does open them up to free backstab, and for that, I appreciate this heretical miracle.
"Angel" worship was deemed heresy at some point before Oceiros turned Dragon. I'm fairly certain from all clues provided, that it was due to the "angel" that Gertrude spoke to being Kaathe the Primordial Serpent, as seen in the statues around the Archives(PS's with cherub wings). Though that could be Frampt I suppose, being honoured by a kingdom that wished to link the fire. Whatever it was though, it took Gertrude's eyes and tongue. It gave those fat knights wings. The miracle itself is something that Gertrude scrawled out while imprisoned in a birdcage, of all things.
And an interesting thing about that miracle, instead of dealing damage with a blessed property or lightning property or magic property, it deals purely physical damage.