Chest of Harmony



The mysterious chest is a chest first seen in the second part of season four's premiere, after emerging from the Tree of Harmony. The chest requires six keys to open, and its contents are unknown.

Princess Twilight Sparkle - Part 2
After the chest emerges from the Tree of Harmony, Princess Celestia reveals that she does not know the location of the keys, but says to Twilight Sparkle "...it is a mystery you will not be solving on your own."

Castle Mane-ia
The chest is briefly mentioned in the beginning of this episode. According to Twilight, no information on the chest and its contents exists in Ponyville.

Twilight Time
In the library, a greenprint of the chest can be seen in the background.

Rarity
Rarity received her key in Rarity Takes Manehattan in the form of a rainbow-colored spool of thread given to her by Coco Pommel.

Rainbow Dash
Rainbow Dash received her key in Rainbow Falls in the form of a golden Wonderbolts pin given to her by Spitfire.

Pinkie Pie
Pinkie receives her key in Pinkie Pride in the form of a rubber chicken named Boneless given to her by Cheese Sandwich.