McMMO is a progressive leveling system where players gain XP to level up in various skills such as mining, woodcutting, and herbalism. You unlock new skills with higher levels, and there are even 2 child skills that gain levels from other skills! Mining: Special ability is Super Breaker. It adds 5 levels of efficiency to your pickaxe for a few seconds. It also has the ability Blast Mining where once you have enough levels, you can shift right click TNT with flint and steel from far away to explode it.