Stella (overlaid on the right) is draining Flippy Dove Treat of her excess weight. The card's info says:
Weight Drain
Continuous Trap
When you control "My Little Pony Stella", "My Little Pony Mary" and/or "My Little Pony Stephanie": The DEF of each face-up "My Pudgyville Pony" monster on the field except "My Pudgyville Pony Jasmine" or "My Pudgyville Superhero Pony Fat Mare" becomes 0. When "My Little Pony Stella", "My Little Pony Mary" and/or "My Little Pony Stephanie" is removed from the field, destroy this card.
Rare