Nightmare's Steelcage [DEM3-EN014] Common 88a Set: Ancient Sanctuary Card type:

Set: Ancient Sanctuary Card type: Effect Monster Rarity: Super Rare Attack: 1600 Defense: 600 When this card is sent from the field to the Graveyard

Must be Special Summoned by "Commander Covington"

Set: Crimson Crisis Card type: Synchro/Effect Monster Rarity: Super Rare Attack: 400 Defense: 1800 1 Tuner + 1 or more non-Tuner Spellcaster-Type monsters When this card is Synchro Summoned

Negate the activation of that card and destroy it

Nightmare's Steelcage [DEM3-EN014] Common 88a Set: Ancient Sanctuary Card type:Set: Demo Deck 2016 Card type: Normal Spell Rarity: Common This card remains on the field for 2 of your opponent's turns. While this card is face up on the field, no monsters can attack.