I have a cleaver that does 25 damage, yet I can 2 shot a wither.Well a Manyullyn + Paper cleaver is 14 base damage. That gives 5 modifiers to start, and an additional 3 unlockable. Using 6 of 8 modifiers on quartz gets you to 40 damage. Using all 8 gets you to 49 damage. One could say it packs quite a wallop. Takes down the wither in 7 hits. 3 hits if you use a strength 2 potion.