The mysterious Gabby Gums, whom was only spoiled by the the creators themselves after feeling guilty. Her card's info says:
RB10-EN061:
My Little Pony Gabby Gums
LIGHT / Alacorn Pony-Type Fusion / Level 6 / ATK 2400 / DEF 1800
"My Little Pony Apple Bloom" + "My Little Pony Singing Sweetie Belle" + "My Little Pony Scootaloo"
A Fusion Summon can only be done with the above Fusion Materials. Once per turn: You can target 1 face-up monster your opponent controls; halve that target's ATK, until the End Phase, or if you control "My Little Pony Diamond Tiara", the ATK lost by this effect is permanent. If this face-up card is destroyed: You can target 1 "My Little Pony Apple Bloom", "My Little Pony Singing Sweetie Belle" and 1 "My Little Pony Scootaloo" in your Graveyard; Special Summon those targets in face-up Defense Position.
Super Rare