You do not have to fear pain. It shows you the fact that you are still alive.
[AUTO]:[Counter-Blast 1] When this unit is placed on (VC) or (RC), if you have a vanguard, you may pay the cost. If you do, put the top card of your deck into your damage zone, and at the beginning of your end phase, choose a card from your damage zone, return it to your deck, and shuffle your deck.