Flash of Heraldry

Target any number of face-up monsters your opponent controls; those monsters' names become "Unknown". During your End Phase, if you control a Psychic Xyz Monster and this card is in your GY: You can Set this card, but banish it when it leaves the field. You can only use this effect of "Flash of Heraldry" once per turn.

Type

Quick-Play Spell

Monster type

Quick-Play

Archetype

Heraldry

Ban list (TCG)

Unlimited