Cast Blessed Wind by paying ({7} magic symbol) ({W} magic symbol) ({W} magic symbol) , causing an opponent with at least forty life to lose life until their life total is equal to twenty.
At the beginning of your end step, Warlock Class triggers, causing each opponent to lose life equal to the life they lost this turn.
The opponent targeted by Blessed Wind in step 1 loses the game due to having zero or less life.