Skull Meister [STBL-EN081] Secret Rare Hidden Arsenal attach this card to it

attach this card to it as an Xyz Material

by having 5 or more DARK monsters in your Graveyard while you control no monsters

If this face-up card in its owner's control leaves the field because of an opponent's card effect: You can Special Summon up to 3 "Ancient Gear Golem" and/or "Ancient Gear Golem - Ultimate Pound" from your hand

the Fusion Material Monsters listed on a Fusion Monster Card that lists a Synchro Monster as a Fusion Material Monster

Skull Meister [STBL-EN081] Secret Rare Hidden Arsenal attach this card to itSet: Starstrike Blast Card type: Effect Monster Rarity: Secret Rare Attack: 1700 Defense: 400 During either player's turn, when a card effect is activated in your opponent's Graveyard, you can send this card from your hand to the Graveyard to negate the effect.