Darklord Uprising (MP21-EN151) [2021 Tin of Ancient Battles]

Send 1 "Darklord" monster from your hand or face-up field to the GY; Fusion Summon 1 DARK Fusion Monster from your Extra Deck, using monsters from your hand or field as Fusion Material, then, you can gain LP equal to the original ATK of the monster sent to the GY to activate this card. You can only activate 1 "Darklord Uprising" per turn.