ChatGPT confirms that based on D&D 5e rules, it would be impossible to hit a target with an AC of 30.
Disregarding the Mirror Image +9 AC buff, even with an AC of 21, the chances of being hit 4 times in a row, while not impossible, are highly improbable.
Also, nowhere do the D&D 5e rules online state that Hold Person confers Advantage to the attacker.
I'm quite positive that Hold Person is bugged and causes AC to either be ignored, or drastically lowered.
