Darklord Zerato [PTDN-EN081] Secret Rare SM135 and this Fusion Summoned card

and this Fusion Summoned card attacked: You can send 1 "Blue-Eyes" Fusion Monster from your Extra Deck to the Graveyard

Set: Diamond & Pearl: Mysterious Treasures Type: Metal Rarity: Common Retreat cost: Colorless

you can discard 1 DARK monster to send 1 DARK monster from your Deck to the Graveyard

You can only use this effect of "Satellarknight Unukalhai" once per turn

and Special Summon it in face-up Defense Position

Darklord Zerato [PTDN-EN081] Secret Rare SM135 and this Fusion Summoned cardSet: Phantom Darkness Card type: Fairy Effect Rarity: Secret Rare If there are 4 or more DARK monsters with different names in your Graveyard, you can Tribute Summon this monster by Tributing 1 DARK monster. You can send 1 DARK monster from your hand to the Graveyard to destroy all monsters your opponent controls. If you activate this effect, destroy this card during the End Phase of this turn.