Kozmo Dark Eclipser [BOSH-EN085] Secret Rare Ultra Rare During your next Standby Phase

During your next Standby Phase after this card was destroyed by card effect and sent to the GY: You can destroy 1 "Nephthys" monster in your Deck

This card's activate and effect are unaffected by "Necrovalley"

also you cannot Xyz Summon other monsters for the rest of this turn

Negate the activation

but the strongest among the monsters can be Tributed to replicate the effects of Raigeki or Harpie's Feather Duster

Kozmo Dark Eclipser [BOSH-EN085] Secret Rare Ultra Rare During your next Standby PhaseSet: Breakers of Shadow Card type: Effect Monster Rarity: Secret Rare Attack: 3000 Defense: 2600 Cannot be targeted by an opponent's card effects. During either player's turn, when a Trap Card is activated: You can banish 1 "Kozmo" monster from your Graveyard; negate the activation, and if you do, destroy that card. If this card is destroyed by battle or card effect and sent to the Graveyard: You can banish this card from your Graveyard; add 1 Level 8