Stellarknight Constellar Diamond [SECE-EN051] Ultimate Rare LGS015-P Both you and your opponent

Both you and your opponent can use this effect as long as this card remains face-up on the field

If a monster you control would be destroyed by battle

destroy Helm of Isen's Peak: Your hero gains +1 [Intellect] until end of turn

If this card is in your Graveyard: You can target 1 of your banished "Aleister the Invoker"

If this face-up card is destroyed by battle

Stellarknight Constellar Diamond [SECE-EN051] Ultimate Rare LGS015-P Both you and your opponentSet: Secrets of Eternity Card type: Xyz Effect Monster Rarity: Ultimate Rare Attack: 2700 Defense: 2000 3 or more Level 5 LIGHT monsters During your Main Phase 2, you can also Xyz Summon this card by using a "tellarknight" Xyz Monster you control as the Xyz Material, except "Stellarknight Constellar Diamond". (Xyz Materials attached to that monster also become Xyz Materials on this card.) While this card has Xyz Material, neither player can send cards