Activate Mindslaver by paying ({4} magic symbol) , tapping and sacrificing it, causing you to gain control of target opponent during their next turn.
During the opponent's turn, cast Lethal Vapors by paying ({2} magic symbol) ({B} magic symbol) ({B} magic symbol) .
Have the opponent activate Lethal Vapors' ability an arbitrarily large number of times by paying a total of ({0} magic symbol) , destroying Lethal Vapors and causing the opponent to skip their next turn for each time Lethal Vapors was activated.