[AUTO]: [Counter Blast(1)] When this Unit appears in the Vanguard or Rearguard-Circle and you have a «Murakumo» Vanguard, you may pay the cost. If you did, search your deck up to 1 "Stealth Beast, Million Rat" from your Deck and Call it to a Rearguard-Circle. Shuffle your Deck. At the beginning of the End Phase for that Turn, place that Unit at the bottom of your Deck.
If you find one, many other will follow. Tightly packed, in the dark.