Twin Doom
Quick-Play Spell
When you control a Duo monster that is being treated as a Normal Monster: Target that monster; treat it as an Effect Monster, and if you do, target 2 cards on the field; destroy them.
Super Rare
My Little Pony Sunshine
LIGHT / Pony-Type Tuner / Level 4 / ATK 1600 / DEF 1200
You can discard 2 cards; this face-up card you control can attack your opponent directly. Cannot be destroyed by battle while you control a face-up Duo monster. Destroy this card if you control no other face-up "My Little Pony" monsters, except "My Little Pony Sunshine".
Common
My Little Pony Moonshine
LIGHT / Pony-Type Synchro / Level 8 / ATK 1600 / DEF 1200
1 Tuner + 1 or more non-Tuner monsters
When this face-up card you control battles: You can target 1 Duo monster in your Graveyard; banish that target, and if you do, this card gains ATK equal to that target's ATK until the end of the Damage Step.
Rainbow Rare
Duo Slash
Normal Trap
When you control a Duo monster that is being treated as an Effect Monster: Target 1 monster your opponent controls; halve that target's ATK.
Common
Half Off
Normal Spell
Target 1 face-up Duo monster you control that is being treated as an Effect Monster; treat it as a Normal Monster.
Common
My Little Pony Lovely Cutie
LIGHT / Pony-Type Synchro / Level 4 / ATK 1600 / DEF 1200
1 Tuner + 1 or more non-Tuner monsters
When this face-up card destroys an opponent's monster by battle and sends it ot the Graveyard: It gains 600 ATK. If this card attacks, your opponent cannot activate Spell/Trap Cards until the end of the Damage Step.
Rainbow Rare
My Little Pony Sparkle Sweet
LIGHT / Pony / Level 8 / ATK 3200 / DEF 2400
Cannot be Normal Summoned/Set. Must be Special Summoned by Tributing 2 Duo monsters you control and cannot be Special Summoned by other ways. If this face-up card you control would be destroyed by battle, you can banish 1 Duo monster in your Graveyard instead.
Common
Split Personality
Normal Trap
When your opponent gains control of a Duo monster you control that is being treated as an Effect Monster: Target that monster; it is treated as a Normal Monster.
Common
Double Rainbow
Normal Trap
Target 1 face-up Duo monster you control; its ATK is doubled, until the end of this turn. If it attacks, change it to Defense Position at the end of the Damage Step.
Rainbow Rare
My Little Pony Fruity Pie
LIGHT / Pony-Type Duo / Level 4 / ATK 1600 / DEF 1200
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
- Once per turn, while you control a face-up Duo monster with a different name: Double this face-up card's ATK and DEF, until the end of this turn.
Super Rare
My Little Pony Golden Sunshine
LIGHT / Pony-Type Synchro / Level 7 / ATK 1600 / DEF 1200
1 Tuner + 1 or more non-Tuner Duo monsters
Face-up Duo monsters you control that are being treated as Effect Monsters cannot be targeted by Spell effects. During the End Phase, if this face-up card you control is destroyed and sent to the Graveyard: You can Special Summon it from your Graveyard, and if you do, its ATK and DEF become twice its original ATK and DEF until the end of your opponent's next turn.
Rare
Double Barrier
Continuous Trap
You take no battle damage from battles involving face-up Duo monsters you control.
Rainbow Rare
Persistent Duo
Equip Spell
Equip only to a Duo monster. It cannot be destroyed by battle.
Common
My Little Pony Cutie Fruity
LIGHT / Pony / Level 4 / ATK 1600 / DEF 1200
Once per turn: You can target 1 face-up Duo monster you control that is being treated as an Effect Monster; it can make a second attack during the same Battle Phase this turn, but change it to Defense Position at the end of the Damage Step, also, it cannot change its battle position until the end of you next turn.
Common
My Little Pony Fun Flier
LIGHT / Pony-Type Duo / Level 5 / ATK 1600 / DEF 1200
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
- This face-up card gains 200 ATK for each face-up Duo monster you control.
Rainbow Rare
Seeing Double
Normal Trap
Target 1 Duo monster you control. Special Summon 1 Duo monster from your Graveyard with the same name, but it cannot be treated as an Effect Monster this turn.
Common
Duo Generator
Normal Spell
Add 1 Level 4 or lower Duo monster from your Deck to your hand. You can only activate 1 "Duo Generator" per turn.
Common
My Little Pony Singing Butterflies
LIGHT / Pony-Type Duo / Level 4 / ATK 1600 / DEF 1200
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
- You can Normal Summon Duo monsters from your hand without Tributes, but they cannot attack this turn.
Rainbow Rare
My Little Pony Sweet Rainbow
LIGHT / Pony-Type Duo / Level 4 / ATK 1600 / DEF 1200
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
- Duo monsters you control cannot be destroyed by battle.
Common
Impaired Vision
Continuous Trap
Once per turn: You can activate 1 of these effects.
- Target 1 Duo monster you control; treat it as an Effect Monster.
- Special Summon 1 Duo monster from your hand. You must control no monsters to activate and to resolve this effect.
Super Rare