[AUTO]:When this unit is placed on (VC) or (RC), if you have a vanguard with "Musketeer" in its card name, [COST][Soul-Blast 1 & retire a rear-guard], look at three cards from the top of your deck, choose up to one unit card from among them, call it to (RC), and put the rest on the bottom of your deck in any order. If you called a trigger unit, [COST][Counter-Blast 1], and activate all of that card's trigger effects. (Perform this trigger effect before other cards' abilities)