Wild Bullet of Dust Storm, Clifton

:When this unit attacks or boosts, if your opponent's rear-guard was retired by the ability of your vanguard this turn, this unit gets +2000 until end of that battle for each of your opponent's open . :At the end of the battle this unit boosted, if you have a vanguard with "Eugene" in its card name, [retire this unit], choose up to three cards from your soul, and if you chose one or more cards, return them to the deck and shuffle it. If you did not this turn, 1.