EQD Writer's Training Ground #20:
Writing Prompt:
Tirek wasn't the only creature to escape from Tartarus when Cerberus left his post...

Two former prisoners of Tartarus find each other in Twilight's Castle, both there for different reasons, and only one can read minds.

EQD Writer's Training Ground #19:
Writing Prompt:
Describe another pony's Equestria Games experience. It can be any pony not shown competing in one of the events in the episode, and can include both the event they competed in and what happened before and after during their visit to the Crystal Empire.

When the Changelings are allowed to compete in the Equestria games, long time competitor Atl seeks to use it to his advantage

EQD Writer's Training Ground #17:
Writing Prompt:
Another pony (not necessarily a unicorn) is somehow imbued with the Inspiration Manifestation spell. What happens?

Candyfluff is the local pariah, shunned by everyone in Ponyville. Something she though she had long since come to terms with, until her friend visits, brandishing a spell book she startled out of Princess Twilight's dragon assistant.

EQD Writer's Training Grounds #16:
Writing Prompt:
There must always be a princess at the Rainbow Falls Trader Exchange.

While her sister deals with the noble families of Canterlot, Luna is often sent to officiate over major events, such as the Rainbow Falls Trader's Exchange.

EQD Writer's Training Grounds #15:
Writing Prompt:
Thanks to her uncanny eye for detail on the wing, Rainbow Dash glimpses something she should never have seen.

Rainbow Dash returns home after an exhausting day to find Tank missing... and she remembers catching glimpses of him in town while she was flying. Where has Tank gone, and why?