A player cannot attack face-down monsters during this turn.
A Hero Emerges
When an opponent's monster declares an attack: Your opponent chooses 1 random card from your hand, then if it is a monster that can be Special Summoned, Special Summon it. Otherwise, send it to the Graveyard.
A Major Upset
Tribute 1 face-up Attack Position Level 2 or lower monster you control; return all Level 7 or higher Special Summoned monsters to the hand.
A Rival Appears!
Select 1 face-up monster your opponent controls. Special Summon 1 monster from your hand that has the same Level as the selected monster.
Abominable Chamber of the Unchained
Special Summon 1 "Unchained" monster from your hand or GY. If this Set card is destroyed by card effect: You can Special Summon 1 "Unchained" monster from your Deck. You can only use each effect of "Abominable Chamber of the Unchained" once per turn.
Activate only during your opponent's turn. This turn, the attacks from your opponent's monsters become direct attacks.
Abyss Actors Back Stage
If you have 2 "Abyss Actor" cards in your Pendulum Zones: Add 2 "Abyss Actor" Pendulum Monsters with different names from your Deck to your Extra Deck face-up. You can only activate 1 "Abyss Actors Back Stage" per turn.
Abyss Actors' Curtain Call
If an "Abyss Script" Spell Card or effect is activated this turn: Add face-up "Abyss Actor" Pendulum Monsters from your Extra Deck to your hand, up to the number of "Abyss Script" Spells in your GY. Then, you can Special Summon "Abyss Actor" Pendulum Monsters from your hand with different names, up to the number of monsters added to the hand by this effect. You cannot Special Summon monsters for the rest of this turn, except "Abyss Actor" Pendulum Monsters. You can only activate 1 "Abyss Actors' Curtain Call" per turn.
Target 1 "Mermail" monster you control; it gains 1000 ATK until the End Phase. When this Set card is sent to the Graveyard: Target 1 monster your opponent controls; send that target to the Graveyard.
Target 3 "Mermail" monsters in your Graveyard; Special Summon those targets in face-up Defense Position. Their effects are negated and they cannot declare an attack. Destroy them during the End Phase.