I realized that this deck is actually pretty similar to Divine Glory. Immortal creatures and permanent control, though without miracles but higher damage and some creature control.
There isn't as much permanent control, but it only takes one explosion to destroy a shield. And it only takes one destroyed shield to lose. That knocks out every shield except bone wall, hope, mirror shield, and jade shield. Mirror shield and jade shield don't block enough damage, and a single ablaze will get over them.
Bone wall would require a consistent way to add to it faster than it's broken or at least enough to block until you can get the kill.
The other options would be protected fire buckler or spine carapace, maybe permafrost shield (which probably can't keep up with massive increasing damage), but those require a lot of healing. Feral bonds and SoGs can be destroyed, any spell healing won't be enough/will run out. Most decks just don't pack enough protect artifacts.
The easiest way would be RoL/Hope, and that's about the only common FG farming deck that will have a high win rate. Still similar to Divine Glory.