Gem-Knight Lady Lapis Lazuli (BLMM-EN144) [Battles of Legend: Monster Mayhem]

"Gem-Knight Lapis" + 1 "Gem-Knight" monster<br>Must first be Fusion Summoned with the above Fusion Materials. You can only Special Summon "Gem-Knight Lady Lapis Lazuli(s)" once per turn. Once per turn: You can send 1 "Gem-Knight" monster from your Main Deck or Extra Deck to the Graveyard, and if you do, inflict 500 damage to your opponent for each Special Summoned monster on the field.