Activate only by paying 1000 Life Points when you control a face up "My Little Pony" monster. Negate the Summon or the activation of a Spell or Trap Card and destroy the Summoned Monster or activated Spell or Trap Card.
(Super Rare)

Activate only when your opponent declares an attack on a face up Duo monster you control. Negate the attack and return the monster to it's owner's hand.
(Common)

~ Rulings ~

1. The effect targets the attacked Duo monster you control.

Activate only when you control "My Little Pony Love Kiss". That monster cannot be targeted by your opponent's card effects this turn.
(Common)

~ Rulings ~

1. If the Duo monster you discarded to the Graveyard is removed from play before the effect of "My Little Pony Royal Princess" resolves, you do not draw 1 card.

Negate the activation of a card effect that targets a "My Little Pony" non-Duo monster and destroy it.
(Rare)

~ Rulings ~

1. If the attack target is face-down, "My Little Pony Sky Dancer" will gain ATK equal to the ATK of the monster when that monster is flipped face up for Damage Calculation.

~ Rulings ~

1. If you control multiple Tuner monsters when you Summon "My Little Pony Pink Fairy", choose 1 Tuner monster and have "My Little Pony Pink Fairy" gain ATK equal to that Tuner monster's ATK.

Remove from play 1 "My Little Pony" monster in your Graveyard. Negate the activation o f a card effect that would destroy a "My Little Pony" monster(s) you control and destroy it.
(Common)

~ Rulings ~

1. Removing from play 1 "My Little Pony" monster is a cost to activate "Rainbow Guard".

Activate only when your opponent Summons a monster and he or she controls more monsters than the number of "My Little Pony" monsters you control. Destroy monsters your opponent controls until the number of monsters on both sides of the field is equal.
(Rare)

~ Rulings ~

1. You destroy the opponent's monsters with the effect of "Rainbow Equalizer".

~ Rulings ~

1. Its Level remains at Level 3 from the time that the effect is activated until it is removed from the field or flipped face down.

~ Rulings ~

1. You cannot activate this card if you have no unoccupied Monster Card Zones because you Special Summon the Synchro monster first, then send the Synchro Materials to the Graveyard.

Remove from play 1 Tuner monster in your Graveyard. All face up monsters you control with less than 1000 ATK gain the ATK of the removed monster and can attack your opponent directly this turn. They are changed to Defense Position at the end of the Battle Phase.
(Rare)

~ Rulings ~

1. If the monster(s) affected by "Strength of the Weak" have their ATK increased to be more than 1000 ATK, the effect of "Strength of the Weak" disappears.

Select 1 face up Tuner monster you control. Its Level is increased by 2.
(Common)

~ Rulings ~

1. You cannot use the effect of "My Little Pony Tuneful Note" more than once per turn.

~ Rulings ~

1. If the selected monster is flipped face down before "Duo Adhesive" can resolve its effect, the opponent's monster does not lose ATK because the selected monster's ATK is now unknown.

~ Rulings ~

1. "Secret Passage" can still be destroyed by card effects that destroy both Spell and Trap Cards such as "Heavy Storm".

~ Rulings ~

1. You can activate the effect of "My Little Pony Sweet Melody" even if you control face down "My Little Pony" monsters.

Special Summon 1 Duo monster from your Graveyard. It cannot be treated as an Effect Monster or be Tributed. When this card is removed from the field, destroy the monster. When the monster is destroyed, destroy this card.
(Common)

~ Rulings ~

1. If you Special Summon the Duo monster with "Duo Revive" and Royal Decree is activated afterwards, you can treat the Special Summoned Duo monster as an Effect Monster because that monster is no longer affected by "Duo Revive".

~ Rulings ~

1. If this card attacks and your opponent activates "Magic Cylinder", apply the new ATK as damage for "Magic Cylinder's" effect.

~ Rulings ~

1. The effect to destroy 2 cards on the field targets.

Activate only when a Duo monster you control is attacked. Flip that Duo monster face down.
(Common)

~ Rulings ~

1. A replay occurs when you activate "Identity Crisis" and therefore gives your opponent the choice of to replay their attack.

Tribute 1 Level 8 Duo monster. Draw 2 cards.
(Common)

~ Rulings ~

1. If your opponent chains a card that forces you to discard when you have activated "My Little Pony Sunshine's" effect but haven't discarded, the effect of "My Little Pony Sunshine" disappears unless you can stop that opponent's card.

Select 1 face up Duo monster you control that is being treated as an Effect Monster. Halve the ATK of 1 face up monster your opponent controls.
(Rare)

~ Rulings ~

1. You cannot treat the selected Duo monster as an Effect Monster for the rest of this turn except with another card effect unless you have not Normal Summoned yet.

Activate only when control of a face up Duo monster you control that is being treated as an Effect Monster shifts to your opponent. Make that Duo monster a Normal Monster.
(Common)

Target face up Level 4 Duo monster's ATK is doubled until the End Phase. After it attacks, it is changed to Defense Position.
(Rare)

Battle Damage involving a Duo monster you control becomes 0.
(Rare)

Select 1 Duo monster you control, then Special Summon 1 Duo monster with the same name from your Graveyard.
(Rare)

Once per turn, you can activate 1 of these effects: ● Treat 1 face up Duo monster as an Effect Monster. ● Special Summon 1 Duo monster from your hand.
(Secret Rare)