Season 1 and 2 where pretty normal, but somewhere in between season 2 and 3... Everypony lost their mind.

The Cutie mark crusaders find three weapons in a large hole and memories of past life come back

What would life be like if Discord had succeeded in taking over Equestria?

Legends are very intriguing.

After The HumanDion used the Bomb he asked the Doctor to place inside him, in doing so he blew himself and the energy barrier Machine up, however the effect sent Dion to Equestria

Applebloom finds a strange glowing rock after doing her chores, after she picks up the rock, she gains the Powers of the Sea God Poseidon, meaning she can now Control water, however Applebloom can now hear the sea god's voice in her head

Its pretty much crossed with the 1st Episode of AWM [Archie's weird Mysteries]

A version of Glory of Heracles using MLP FIM characters instead

Rainbow Dash reveals she has a twin sister who fell out of the sky and she assused she's dead

The first three sailor scouts fall into a black hole into Equestria

A Pushing Daisies MLP MFIM Crossover

Cooro finds himself in Equestria near Sweet Apple Acres

I wake up as Applejack

The Cutie Mark Crusaders and Fluttershy replace the dead heroes

Lunar Dragon Song Crossover with the Cutie Mark Crusaders