From Blaseball Wiki
Over Under is a player modification from the Season 12 Arcana Drawing that causes a player to Underperform when their team has more than five runs.
Over Under causes players to Underperform as soon as their team has over five runs. When the team passes five runs the game log will display the message "Over Under, On."
Much like with Under Over, Over Under will activate even if the player with the modification is not active, resulting in the game being interrupted by the message announcing that Over Under has activated.
Over Under was first seen as a part of the first even Seasonal Reading in Season β12. When I The Magician card of the Yellowstone Magic was drawn first and Curry Aliciakeyes was granted the Over Under modification.
- Under Over - the second modification granted in the Season 12 Arcana Drawing