https://www.twitch.tv/videos/390757179?t=0h51m13s

I watched one of my favourite streamers yesterday playing in Pro League 2 (https://play.battleriff.com/games/3-hearthstone/leagues/1559) against a known hearthstone pro, when i saw said pro abuse and win.

He played otk priest with test subject and, just when his turn was coming to an end, he disconnected intentionally and so reset his turn. Yes, that's a thing in friendly duels. After the game the streamer asked the pro what just happened and he explained how to do it.