Say, I have a freind... j/j

Question:

This is what happened today when I played, I was using thanos and perplexed his damage up from 3 to 4.

after my turn had finished it was my opponents go. (duh)
He mind controlled the might-e- beast (thanos) and then used him to attack 1 of my chars. Does Thanos's damage go back to 3 or stay at 4 till my next turn???

Thanks alot for reading and I hope one of you people can help me out.

It's over at the end of your turn...

perplex lasts only as long as the turn in which it is used. good thing too it sounds like.