(This Idea was living in me head rent-free, I had to kick it out.)
Art by WolftheWitch on Twitter
So, I just had the idea in my head. This is mostly based on my AU, which basically just rejects canon You know, as you do. So, SBI is canon in my AU, and so is Death God! Philza and Blood God! Technoblade (This'll come in handy for the prompt imma post after this). Dream isn't also a mere mortal, so no immortality or powers for him (despite the fact that he would probably have the design of How Do U Art on YouTube. I just really like Dream being a neon green, stomach-mouthed monstrosity). He's just super overzealous and unaware of the fact that he's in the presence of actual gods.
*cough* On to the actual prompt. I just imagined that, after the Tommyinnit Exile Arc, Philza catches wind of how Dream abused Tommy, so he hunts him down, reveals his godly status, and gives him hell for daring to harm his child. That's it. That's the prompt.