[AUTO](VC):At the end of the battle this unit was attacked by a rear-guard, if no cards were put on (GC) this battle, your opponent chooses a card from their hand, and they may discard it. If they did not discard a card, bind the rear-guard that attacked. [AUTO]:When this unit is rode upon by a grade 3 card with "Siana" in its card name, choose a trigger unit or blitz order from your drop, and put it into hand.