Blasmophet, the Soul Harvester Rainbow Foil Promo

(Allies can be attacked and can't be defended with [Defense]. They are destroyed when they have taken damage equal to their [Life]. At end of turn, heal all damage dealt to Blasmophet.)
Once per Turn Action - 0: Attack
Whenever Blasmophet attacks, you may banish a Shadow card from your hand. If you do, you may banish a card from the defending hero's soul.