Will he get pay back against Luna as well?

I raised it above my head and let my voice ring out with pure faith. "DENY THE WITCH!" The glow of her horn was swallowed by a brighter, and more pronounce golden glow, swallowing her spell with my faith

Wait is your character a soulless blank? Because that is incredibly rare gifts even more than being a psyker in 40k.

9212196
It's more a straight power from the more. With great faith in the emperor one can counter various spells. Its rarely mentioned in fluff, but present in cry character for some chapters. Black Templars cone to mind.

9212209
okei mm i have never heard of faithfull casting spells unless they are psykers. But it does not mean that there is something because emperors champions have vision of their future for example how they die just like stated in "shadowsword" book and in audio drama "taker of heads" Scouts from mortifactors go to this drugs state after inhaling fumes from fire, where he sees his brothers bathing in golden light and he himself bathed in darkness. But actual spells no i have not heard, if you have reference of this then tell me the books name sou i can take a look.

9212227
What I can think of off the top of my head is the rulebook for deathwarch. Though I believe the black templar codec mentions it as well.

9212227
Oh, and it's not a spell. More of a 'miracle of faith' like what priests can do in the fluff

9212227
it's not a spell or an ability that a psyker would have. Faith LITERALLY influences reality in WH40K canon. If an individual has enough faith in something, they can cause miracles, and if a GROUP of individuals believe in something enough, they can make it happen. It's how Ork weaponry works, as well as why vehicles painted red go faster.

So I'm guessing the two princesses are Cadence and Twilight.

9612682
Luna and maybe twilight or Candace mostly twilight

I'm assuming when he says two, he's talking about Cadance and Twilight - future alicorns - I wonder if Celestia and everypony else will find out he knows some part of the future, at least up to the first Equestria Girls Movie