Return of the Storm King from Spring Breakdown:

(the Stone Heart glows crimson)
(the Storm Order chant and bow)
Storm Leader: He has been trapped within the Stone Heart. He has hidden within the tempest. He has braved the storm and the darkness between the worlds.
(pieces of stone connect to the heart forming a vessel)
Storm Leader: He called us. And he whispered to the humans with pony powers All this time, he whispered and delighted and seduced, and the pawns did obey; for the Sun and the Twilight were blind and vain, and knew nothing. Nothing of the future leader. The master of this cruise. He who was, is, and shall always be............................ the Storm King!
BANG!
(the stone forms the Stone King.......... wielding his staff........ a grin appearing)
Sc-Twi: Wha? Rainbow was right! She was right!
The Storm King: Yes!!!!!!!!!!!!!!!! I'm back! Finally! And all thanks to you!
(Storm Demons appear and rampage, hunting and capturing humans)
(Bernard charges and grabs the Storm King's staff)
The Storm King: A fight? Good! With witnesses to witness the consequences.
(they wrestle)
Bernard Porter: You're not worthy to lead. You will be stopped.
(the Storm King headbutts Bernard down, then zaps him with his staff)
(many gasp)
Sci-Twi: Wha?
Sunset Shimmer; You zapped him.
The Storm King: Why the concern? You said it's not your problem. Did you think the Rainbow was lying? Did you fail to see the trap?
(he cackles)

This is inspired by these:
https://www.youtube.com/watch?v=2cXqqTq5Fkc
https://www.youtube.com/watch?v=hwo8CNP-8x8