Request from dragon whisper 243

Zyon was a normal human boy living on Earth until Discord showed up and offered him a deal to live in a world of harmony and acceptance, and have powers beyond his wildest dreams. What the merry little prankster didn't tell him was that he'd regress back to an infant, and wouldn't be able to take his family with him, or that he'd be Discords tool to chip away at the harmony that imprisoned him. By giving him chaos magic. Now as Celestia's adopted son must learn how to control his Chaos Magic while teaching a young Twilight Sparkle her first lessons on the magic of friendship.
I hope this lives up to your expectations.