Custom Arena’s needs a mode called lights out, where people can play in the dark, the game master (GM) can randomly turn on and off lights, or lights go out and on at random times.
Players should just have minimal vision, or just like playing in dark rooms in the obsidian sanctum. Spell effects should create light too.
This game is pretty boring right now, and this idea I thought of could bring spark to PvP and make it actually enjoyable.