#2 The Fiend can not be killed
The Fiend has changed after that Firefly Inferno match at WWE TLC 2020. He is burned and even melted to an extent, but one thing was made clear with his return tonight - The Fiend can not be killed. No mortal being can survive after being burnt alive in the manner that he was at the hands of Orton.
The extent of damage that Randy Orton did to The Fiend was massive, but even that couldn't kill him. Orton almost seemed as if he saw a ghost tonight at WWE Fastlane 2021. Things are surely going to get a lot uglier yet more interesting now.
#1 To set up a WrestleMania 37 match against Randy Orton
In all likeliness, The Fiend's return tonight at WWE Fastlane 2021 will lead to him having a match against Randy Orton at WrestleMania 37 next month. The two were rumored to have a cinematic style match at Royal Rumble earlier this year, but that didn't happen. Now, the question is what unique stipulation could we witness when they take on each other at WrestleMania 37?
It would also be interesting to see what role Alexa Bliss plays in this storyline going forward. Another massive question is what happened to the Firefly Fun House version of Bray Wyatt? Will he return too with a melted face? That would be horrifying.