Winged Kuriboh LV6 (Quarter Century Secret Rare) [BLTR-EN001] Quarter Century Secret Rare

(This card is always treated as an "Elemental HERO" and "Favorite" card.) Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand or GY) by banishing 1 "Elemental HERO" Fusion Monster or 1 "Winged Kuriboh" from your hand, face-up field, or GY. You can only Special Summon "Winged Kuriboh LV6" once per turn this way. When an opponent's monster declares an attack, or your opponent activates a monster effect on the field (Quick Effect): You can Tribute this card; destroy that 1 monster, and if you do, inflict damage to your opponent equal to its original ATK.