Stellarknight Constellar Diamond [SECE-EN051] Ultimate Rare Invocation // Dragon Ally deal 1 arcane damage to

deal 1 arcane damage to target hero

If damage calculation is performed involving this Fusion Summoned card

if you have a [Diaboromon] in play

without applying damage calculation

when an opponent's monster declares an attack: You can change 1 face-down Defense Position "Subterror" monster you control to face-up Attack or Defense Position

Stellarknight Constellar Diamond [SECE-EN051] Ultimate Rare Invocation // Dragon Ally deal 1 arcane damage toSet: 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