Phantom Thieves' Guild
From Blaseball Wiki
Phantom Thieves' Guild is a stadium modification that states that whenever the home team loses by 9 or more Runs, they will steal from their opponent's Shadows. The modification was only offered in Season 22, where as a result of Ratification and 18 teams building the modification, it became a league-wide rule.
The first recorded activation of the Phantom Thieves' Guild occurred on Season 22 Day 73, when The Bucket's Thieves' Guild stole Beans McBlase from the Pies' shadows, and gave them to the Mexico City Wild Wings.
Phantom Thieves' Guild was nullified by Black Hole (Black Hole) on Season 24 Day 50.
Stolen Player Occurrences
There are 44 known cases of Phantom Thieves' Guild activating and stealing a player from an opposing team.