Royal Tribute (Red) [DL11-EN017] Rare Elemental Hero Collection 2 Monster Text : Unhandled exception

Monster Text : Unhandled exception at 0x1i-666 in qliphort

This card gains 300 ATK for each monster you control that is owned by your opponent

Set: Astral Pack 7 Card type: Xyz/Effect Monster Rarity: Ultimate Rare Attack: 2000 Defense: 1500 2 Level 4 monsters You can detach 1 Xyz Material from this card

except by drawing them (except during the Damage Step): You can send that card(s) to the Graveyard

Royal Tribute (Red) [DL11-EN017] Rare Elemental Hero Collection 2 Monster Text : Unhandled exceptionSet: Duelist League Promo Card type: Normal Spell Rarity: Rare Activate only while you control "Necrovalley": Both players discard all Monster Cards in their hands.