Chaos Guardian Fight Without Draconic Evolution Weapons/Armor - Modded Minecraft Highlight
Done in All The Mods 3 Remix 1.3.0. Minecraft 1.12.2.
Things needed:
Mantle of Stars for that chaos resistance - Astral Sorcery
Corrupted Horologium Ritual for the time freeze - Astral Sorcery
Key of the Kings Law to damage the Chaos Guardian through the crystals - Botania
Fast flight from any mod. I used the Globe Trotter's sash - Botania
That's pretty much it. The Guardian is pretty vindictive so getting it to chase you is easy. I claimed the area so the Guardian's projectiles wouldn't blow anything up. The chunk loading was not needed unless I was flying or teleporting far enough away that the ritual would get unloaded.
Possible upgrades include the Last Stand enchant on your armour and a bunch of levels to survive in-case the Chaos Guardian manages to hit you somehow.