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It's discouraged to call a judge at all in this game because people don't think of it as a game, they think of it as a ministry.
Dominants--definitely do not like this one. We have rules for when multiple dominants hit the table near-simultaneously.
The problem with a Priority System, such as what ChristianSoldier suggested, is that it then slows the game down, by forcing you to check after every single action to make sure nobody is going to then play a dominant.