YuGiOh Marik Structure Deck

If Necrovalley is on the field when this card declares an attack, you can select 1 face-up monster your opponent controls and change its battle position.

This card cannot be Normal Summoned or Set. This card can only be Special Summoned to your opponent's side of the field by Tributing 2 monsters they control. You cannot Normal Summon or Set the turn you Special Summon this card. This monster's controller takes 1000 damage during each of their Standby Phases.

If the only cards your opponent controls are face-up monsters with 1600 or more ATK, this monster can attack your opponent directly.

During each of your Standby Phases, inflict 600 damage to your opponent.

You can discard this card to the Graveyard to add 1 Necrovalley from your Deck to your hand.

You can Normal Summon this card by Tributing 1 Gravekeeper's monster. This card gains 200 ATK for each Gravekeeper's monster in your Graveyard. If this face-up card on the field would be destroyed, you can discard 1 Gravekeeper's monster instead.

You can Tribute 1 Gravekeeper's monster you control, except this card, to destroy 1 card your opponent controls.

Select 1 Spell or Trap Card on the field. Destroy it.

This card remains face-up on the field for 2 of your opponent's turns. No monster can attack. Destroy this card during your opponent's 2nd End Phase after this card was activated.

Each player chooses 1 monster they control and switches control of those monsters with each other. Those monsters cannot change their battle positions for the rest of this turn.

Select 1 face-up monster on the field and flip it into face-down Defense Position.

Each time your opponent takes damage from a card effect, except Dark Room of Nightmare, inflict 300 damage to your opponent.