Flash of Heraldry

Game: Yu-Gi-Oh!

Series: Alliance Insight

Set: Alliance Insight (#56)

Rarity: Super Rare

Card Type: Spell

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.