If you choose a quest where you do not get units and you have no energy costs, you can level without additional Exp boost, e.g. in Adumat or in the Karma Dungeon. Just set the repetition to 300 and wait.
But items should also be in autoloot, not just units.
- EXP X9.9
- Item Loot X99
- Boss Defense at 1
- Pre-Loaded BB/SBB
- All Gates Open (Including gates from past events)
If possible (And if you know the mod for it)
- Raid Items Loot X99
- Summoner Arc EXP X9.9
I would really be happy with this... Don't have to do anything grand with money or anything, we have the other mods for that. Just make the Mod 4 with new mods that aren't in previous mods that you already have
Ok it looks like a lot of people don't read the news in BF because now there is a energy refund system in place. If you lose a mission or give up you are refunded the energy cost. You use the 0 energy mod, go into what is normally a high energy cost mission and give up. You will GAIN energy. Once you have enough switch over to the 9.9x EXP mod and have fun. Repeat for infinite leveling.
With that in mind all you need for this mod is
Infinite BB/SB/OD (to use arena orbs when you level)
No unit capture
No item loot
that way you can just level up till your hearts content.