Interdimensional Dragon, Heteroround Dragon (V-SS09/122EN)

[ 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]: [Soul Blast (1)] When this unit is placed on (GC), if you have a vanguard with "Chronojet" in its card name, you may pay the cost. If you do, choose one of your opponent's rear-guards. Your opponent returns that unit to his or her deck, shuffles his or her deck, looks at the top card of his or her deck, and calls it to (RC).