Tournament Rules › 505Tournament rule 505.2Each iteration of a loop must contain identical, non-conditional actions performed on the same set of cards. To establish a loop, the looping player must be able to say with certainty exactly what each step of the loop will be, not just the outcome.505.2.a Loops must be fully deterministic; they may not rely on probability, decision trees, or conditional actions. Example:505.2.b Players can manually execute non-deterministic loops, but must do so in a timely fashion. Failure to do so is Slow…Official Tournament Rules