Then how do you destroy them, and they didn't lag me.
You destroy them with the super secret 1337 dye which has a sooper seecrit id that you can never find.
But first you must defeat 100 enemies with a wooden sword and get to level 20 and purchase the no life perk.
Then you need to die 20,000,000,000,000,000 times with the No Life perk and then you get the super awesome block that cant be accesible by give or normal means.
Then you have someone kill you with it.
Then you can break mob spawners with your fist.
Or you could just skip that and BREAK IT WITH YOUR FIST,BECAUSE ANY TOOL CAN BREAK THEM. EVEN YOUR HAND,OR A BLOCK.