I was in the moment I saw the tweet. Easiest call I've ever made.
On July 21, Tom Kislingbury, who goes by the handle @TomDegenerate, tweeted the following:
"New league idea: vampire. Normal start-up draft except one team does not get to pick at all. They just have to make a lineup from waivers. This team is the Vampire."
Tom continued in follow-up tweets.
"Every time the Vampire team wins a weekly matchup, they have to swap one of their starting line-up with one of their opponent's at the same position. So they'll start out weak but with each win get a bit stronger.