https://www.youtube.com/watch?v=u7Q0JFX_y60

RD/KP19-JP055 死地高揚 Shichi Kouyou (Certain Death Promotion)
Normal Spell Card
[REQUIREMENT] Send 1 card from your hand and 1 face-up Zombie monster on your field to the GY.
[EFFECT] Choose 1 card on your opponent’s field and destroy it, then, if there are 4 or more Zombie monsters in your GY, you can draw 1 card.

RD/KP19-JP062 骸の群れ Mukuro no Mure (Skeletal Swarm)
Normal Trap Card
[REQUIREMENT] When your opponent’s monster declares an attack.
[EFFECT] That monster loses 1000 ATK x [The number of “Skull Servant” in your GY] until the end of the turn.