Dirge of the Lost Dragon (MP20-EN079) [2020 Tin of Lost Memories]

Activate this card by declaring 1 card name. Each time the declared card, or its effect, is activated, halve its owner's LP immediately after it resolves. During the End Phase, if this card halved a player's LP this turn, send this card to the GY. While your opponent controls a monster, this card cannot be destroyed by card effects.