[
G guardian
] (Usable when both fighters' vanguards are grade 3 or greater, and the number of face up G guardians in your G zone is three or less)-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.
[AUTO]:[Counter Blast (1)] When this unit is placed on (GC), you may pay the cost. If you do, your opponent chooses one of his or her rear-guards in the back row, and
locks
it. If a card was locked, this unit gets [Shield]+5000 until end of that battle.