Unrivaled Star-vader, Radon D-VS04/044 RRR

[AUTO](Drop):If your soul has one or less cards, this cost is reduced by Soul Blast (1). At the start of your battle phase, COST [Soul Blast (1)], and call this card to the (RC) in the same column as your rear-guard with "Star-vader" in its card name. [AUTO](RC):When this unit attacks, until end of that battle, when your opponent would call cards from their hand to (GC), they must call two or more at the same time. At the end of that battle, bind this unit. (This effect is mandatory)