Seal Dragon, Baraxya

[Abrar]

[AUTO]:[Soul Blast (1)-card with "Seal Dragon" its card name] When this unit is placed on (RC), you may pay the cost. If you do, your opponent may choose a grade 2 card from his or her hand, and call it to an open R. If he or she does not call a card, you draw a card.

So that's baraxya's skill. Now suppose my opponent has 5 rear guards in the field when I use it. Since the skill requires them to call in an open rear guard circle, and since they don't have any open rear guard circle, they can't call. So can I draw or not?

[Sirvat]

Yes you draw