Sky Guardian Supreme Dragon, Bulwark Dragon (V-SS09/SP11EN)

[G guardian]-Opponent Turn's Guard Step-[Choose a card with "Heal" from your hand, and discard it] Call this card to your (GC) from face down. [CONT](GC) Thunderstrike 3 : This unit gets [Shield]+10000. [AUTO]: At the end of the battle that this unit is placed on (GC), for every four cards in your opponent's bind zone, choose up to one [Rest] rear-guard in your opponent's front row, and retire it.