Endless experience 1.12.2
There is a bug that allows you to dope levels. Let's say I have level 30. I click on the button in the book "drain the whole experience." After this operation, any experience gained returns these 30 levels to me, while the "merged into the book" experience remains there.
AbyssalCraft_1.12.2_1.9.4.10.jar
Aroma1997Core_1.12.2-2.0.0.0.B155.jar
AromaBackup_1.12.2-2.1.1.4.jar
BetterAdvancements_1.12.2_0.0.8.50.jar
Betterfps_1.12.2_1.4.8.jar
Blockdrops_1.12.2-1.4.0.jar
Bloodmoon_MC1.12.2-1.5.3.jar
BrandonsCore_1.12.2_2.4.4.173-universal.jar
Buildcraft_1.12.2_7.99.17.jar
ChestTransporter_1.12.2-2.8.8.jar
ChickenChunks_1.12.2-2.4.1.71-Universal.jar
CodeChickenLib_1.12.2-3.2.0.345-Universal.jar
Compactmachines3_1.12.2_3.0.12-b220.jar
Craftingtweaks_1.12.2-8.1.9.jar
Creeping+Nether_1.12.2_2.0.jar
Cucumber_1.12.2_1.1.1.jar
Customized_Dungeon_Loot_1.12.2_1.0.1.jar
Disenchanter_1.12.2_1.6.jar
Draconic_Evolution_1.12.2_2.3.13.306-universal.jar
Dynmap-2.6-Beta-1-Forge_1.12.2.jar
Easiervillagertrading_1.12.2_Forge14.21.1.2387-1.2.jar
Easybreading_1.12-5.0.0.jar
Enchantmentdescriptions_1.12.2-1.1.8.jar
EpicSiegeMod_1.12.2_13.162.jar
Extremereactors_1.12.2_0.4.5.49.jar
Foamfix_1.12.2-0.9.9.1-Law.jar
Ftblib_1.12.2_5.2.0.25.jar
FTBUtilities_1.12.2_5.2.0.30.jar
Giacomosexperienceseedling_1.12.2-1.2.2.jar
Giacomosfoundry_1.12.2-1.3.13.jar
Grim_Pack_1.12.2-5.2.12.78.jar
HammerCore_1.12.2-2.0.0.4.jar
Harvest_1.12-1.2.6-18.jar
Holoinventory_1.12.2-2.1.1.151.jar
ImprovableSkills_1.12.2-3.5.2r.jar
Improvedbackpacks_1.12.2-1.3.0.0.jar
ImprovedMobs_1.12.2_1.2.2.jar
Infernalmobs_1.12.2.jar
InventoryGenerators_1.12.2_1.2.2.jar
Inventorytweaks_1.63.jar
Ironchest_1.12.2-7.0.44.829.jar
Ironjetpacks_1.12.2_1.0.5.jar
Jei_1.12.2-4.11.0.206.jar
Journeymap_1.12.2_5.5.2.jar
Justenoughresources_1.12.2-0.8.8.47.jar
Kjlib_1.12.2_1.0.4.jar
LootBags_1.12.2_2.5.7.jar
LycanitesMobsComplete_1.12.2_1.20.3.1.jar
Mekanismgenerators_1.12.2_9.4.13.349.jar
Mekanism_1.12.2_9.4.13.349.jar
Millenaire_1.12.2_6.2.8.jar
Mousetweaks_2.8-Mc1.12.1.jar
Muon_0.2-1.12.jar
Optifine_1.12.2_Hd_U_E1.jar
Overpoweredarmorbar_1.12.2-0.3.0.jar
Realbench_1.12.2-1.3.3.jar
RedstoneFlux_1.12.2_2.0.2.3-universal.jar
Redstonepaste_1.12-1.7.5.jar
RefinedStorageAddons_1.12.2_0.4.jar
Refinedstorage_1.12.2_1.6.jar
Rpg-Hud_1.12.2_3.6.6.2.jar
Ruins_1.12.2.jar
Sanlib_1.12.2-1.4.4.jar
Signedit_1.12.2-4.jar
SimpleFluidTanks_1.12.2-1.7.1.1.jar
SimpleQuarry_1.12.2-22r.jar
Sophisticatedwolves_1.12.2-3.13.3.jar
Spartanshields_1.12.2-1.4.1.jar
spongeforge-1.12.2-2705-7.1.0-BETA-3358.jar
Subcommonlib-Sublib_1.12.2-1.2.0.4.jar
Techguns_1.12.2-2.0.1.1.jar
Telepads_1.12.2-1.1.0.5.jar
Teleportingxp_1.1.1.1.jar
TheOneProbe_1.12_1.4.23.jar
Toolbelt_1.12.0-1.7.1.jar
TOPAddons_1.12.2_1.8.0.jar
Torcharrows_1.12.2.jar
Torohealth_1.12.2-11.jar
TreeChopper_1.12.2-1.2.4.jar
TurretMod_1.12.2_4.0.0-Beta.3.jar
UncraftingTable_1.12.2_1.8-Beta6.jar
Unnatural_Absorption_1.12.2_1.3.1.jar
Upsizer_1.12.2-4.0.1.jar
Veinminer_1.12.2_0.38.2.647b31535a.jar
Wirelesscharger_1.12.2-1.0.5.jar
Wolfarmor_1.12.2-2.2.3.1798-Universal.jar
Zerocore_1.12.2_0.1.2.2.jar
Edited by xxxLEOPARDxxx