@explorertotodile  
I’d laugh if all they had to do was say was” open says me” or something, and then the box opens, but just before all of the lens flare and special effects fade away to show what’s inside, it quickly cuts to black and says “to be continued in season 5 fall of 2015!”

@explorertotodile  
Then they forfeit all my hope.

What if the rainbow thingies weren’t keys after all?

I don’t see a coin slot.

@Dylanius  
You mean the “big crown thingy” not the element, the element was the jewel part that is now in the tree.

@Prof.NightJack  
Nonon. The CROWN that the Element of Magic was embedded in.

@Elesh Norn  
And then Twilight gives up the Key, falls down a ledge, fuses with a goopy ghost thingy vaguely in the shape of a white pony, transforms into a blonde with a celery Cutie Mark and a propensity for cricket-playing, and picks up a new Mane Six of: a gobby Ponystralian air stewardess, a teenage math genius from another planet in a negative universe (who becomes the first “main-ish” pony to die on screen), a teenage bioelectronic genius who is the daughter of one of the consuls of a pacifist planet (said consul, Xirtie, gets her body possessed by the Great and Powerful Trixie), a ginger schoolcolt that is actually an exiled spy from yet another technologically advanced planet, Trixie’s personal shapeshifting android, and Twilight Sparkle herself, in her new form.

@Professor Melon  
But if that happens then they have to stop a military office from shooting torpedoes with a time loop and combined all the components after getting rid of the false ones with the aid of a shrink ray and a robot dog, and then Mary Tamm has to turn into Lalla Ward!

My first thought when I saw what Applejack received?
 
“So, the box is coin operated?”

“Princess! I must find my key!”  
“No, Twilight. You are the key.”  
And then Twilight was key.

I’mma hedge ten bits on it being Spike. When it comes time they will sacrifice him upon the alter and his soul will unlike the box with gratitude.

@5raptor5
 
No. Just calling it now.

@Background Pony #7909  
You sure?

Twilight’s key is the medal she got from Discord in “Three’s company.”

Ew

@Prof.NightJack  
that be entertaining but probably not

@OmegaRainboom  
What of the last key IS Spike?

What if the Last key is Spike’s and not Twilight’s

Trixie’s Hat or a random item from Sunset Shimmer :P

@Big Mike  

@Archonix  

Okay, maybe their’s one left

Translate keys in Portuguese and.you get Chaves

@Archonix  
Lex Luthor says: WRONG!!!

Man, since the “Rainbowfied” line has been advertised for months, I’m really “ehhh…..” on this Rainbow Power thread…