What's in the box? SPECULATION THREAD (S4 Premier Spoilers)

[Adorkable 2,737]

Something tells me it's going to be rainbow powers, just a hunch.

[Pastel 7,630]

RAINBOW POWAHHHHHHHHH

 

and a crystal castle

I wonder how this huge castle could be in such small box.

 

Actually, the box was somehow a seed.

[Herobrony72 13]

I CALLED IT, i said it would be rainbow power. burt jesus christ. i never saw that fight scene coming

[~*bacon princess*~ 278]

This thread'll be locked sooner or later, so i just wanted to say...

 

Where are the new elements?