Event #231678078
It appears Weather the Storm considers buyback costs an additional spell, not the cost of an existing spell, like Sprout Swarm. In Turn 11, at 11:07 AM EST of the Event, the observer can see the only two spells cast that turn were Sprout Swarm with buyback, and Weather the Storm. This would give a Storm Count of 2, gaining my opponent 3 times 2 Storm Count = 6, not 9 life. I think this is an error.