Some knights do not use this skill, but this skill is indeed very good. When the MT is exposed to excessive damage, you can give him a hand of sacrifice, at the same time, you can use the invincible skill, but whether first you use invincible skill or use sacrifice, that is a luxurious, first used sacrifice that you have to determine you don’t die in a public CD, if you first use invincible skill, you should remember to use the free hand to remove the hand of sacrifice of MT’s body after 10 seconds, otherwise invincible skill is over, but the hands of sacrifice is not over. In addition you also take into account these two actions with treatment vacuum of 3 seconds, and ensure that other treatment can make up the remaining brush.