V Pretty sure she’d just laugh her tail off and they’d disintegrate in horrible agony.

@Radiant  
Please, Pinkamena would fall against a single Bloodletter. The forces of chaos already can bend reality. Such is the power of the warp.

V Eyup.

So then, Pinkie Pie isn’t also fueled by the warp? She had fourth-wall powers, man. She would try to befriend him. He would get pissed and attack her. She would vanish behind his weapon, reappearing from over his shoulder and holding a cake covered in candles. He would attempt to grab her, but she would seem to vanish again, dropping the cake comically on his head. Such shenanigans would continue until Horace got fed up and tried to abscond, but Pinkie wouldn’t relent. Eventually, he would organize a suicide run against the Emperor, just to be done with her.

V Pinkamena breaks the fourth wall. She can literally erase them all from existance.

Radiant, you’re saying Pinkamena can take on a goddamn Primarch that’s also fueled by the Warp.
 
Pinkamena wouldn’t even register as a threat to Horus.

Well, there’s a pwned one resting under the surface of Mars. Who do you think knocked it out, hmm?

@Radiant Heart  
Aahahhaha, No.  
You can’t tie a old one to your basement and then torture them to death while spouting pretentious dialogue.  
She’d have her fucking guts splattered all over the floor, and I’d laugh my ass off over her blood-filled gargles.

Pinkamena > any Chaos god. Hell, Pinkamena could probably rival an Old One. Horus is just a pup in comparison.