After arena the green healing numbers in the 10,000s continue to flash on my screen for 10-15 seconds...sometimes more.
Does Glitchless read any of these by any chance?
The heals after arena are to ensure people who are switching gear will be maxed out in health/mana/energy as their new gear may increase those pools which could result in a defecit.
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Computing the probability that at least one of the following events will occur:
P(a or b ... or z) = 1 - P(!a and !b ... and !z) Probability