I don't know if anyone knows this but there are two types of shield block and Intervention. You know that block can block you from any damage put has a short time while the Intervention has a longer time put has a limited damage attack. To do the glitch you have to have both shields when you are in battle first use your block then after useing block use Intervention so when your block is over and your Intervention is still on you can not get hurt by anything not even piosen or anything like that.
