Problem with Aetherworks Marvel and Emrakul

"Well, it happens when you cast emrakul off of Aetherworks Marvel. A bunch of wonky things can happen. One thing is sometimes it won't give the player who got their turn stolen an extra turn: it'll just cut right back to the emrakul caster's turn.

Another weird thing happens when aetherworks marvel is cast during your opponent's turn. It will steal the turn immediately. Emrakul says "their next turn", so i dont believe it should activate immediately, but i could be wrong. There are times when Emrakul turn stealing DOESN'T activate immediately, but then the Emrakul caster gets my stolen turn RIGHT after i get to finish my turn."

[Source](https://www.reddit.com/r/XMage/comments/541mto/emrakul_bug/)