Ponyville has been invaded by strange bug creatures that can shoot lighting and petrify ponies. After being separated from their parents Pound is attacked and turned to stone. In desperation Pumpkin’s magic awakens, taking the form of her brother and protecting her.
A bit of a late response, but it’s just her magic. I gave Pumpkin effectively a green lantern ring. She summons spheres of magic that turn into things she wants.
In this situation her magic is just awakening for the first time after her brother was petrified and the creatures were coming for her next. Since she holds Pound up as her role model she just instinctively gave it his form since he always protects her no matter the danger.
is close!
Eternal Confection