In a game I am playing my GM decided that OAs happen in arbitrary order of the person doing the attack, instead of all at the same time — the order isn't even in the order of initiative. I was under the impression that all OAs happened simultaneously. Is this not the case?
The exact example is that a monk punched me and then a cleric cast "Command" (via Warcaster) on me, both using their OAs.
Aside, I argued that the Command spell shouldn't work in that circumstance for a bunch of reasons.
The spell says it happens on your next turn, not the same turn.
The command which was to "Grovel" put my character in danger, namely the Monk's punch or the fact that they were surrounded by enemies.
But assuming each opportunity attack was valid, is it correct that the opportunity attackers get to decide the order?