EzekielRaiden
Follower of the Way
Whoah! Whoah! Whoah! Settle down Tex. I never asked for or required anything, let alone consecutive crits and misses.
It doesn't take consecutive crits and misses to wipe a party due to bad luck. It just takes more crits than usual combined with more misses than usual. That's it. All the good planning in the world is bupkis if that happens. And yes, it happens 2-4 times per campaign on average. Sometimes more. I don't remember it being less.
I also frequently run encounters with more than 2 monsters or monsters that have many attacks. Running sims with only two monsters on the DM's side is being very, very chintzy with the real number of attacks that are going to be directed at the PCs over the course of an encounter and campaign.
It was intended to be as maximally fair to Imaculata as possible: assuming only 2 monsters meant few attacks, and thus an increased likelihood of a multi-crit situation. (I also figured, if this is meant to be an actually competent threat, that that would make those crits sufficiently dangerous to matter--getting crit by an attack that does 1d4+1 damage normally probably isn't enough to matter, while one that does 2d12+5 normally is going to hurt like hell.) Increasing the number of DM-rolled attacks simply makes "nearly every/most attacks are crits" an even less likely situation. Hell, even getting 4+ crits out of 16 attacks (4 monsters, 4 rounds) is only p=0.007, or once every ~143 combats.
Anyway, the point was: situations where the party whiffs ultra hard, while the enemy is going full-bore crits everywhere, are statistically quite unlikely, even with playing 200+ combats per campaign. I'm not saying it's impossible for a plan to go south or whatever--just that this example being thrown around, of the enemy critting many times over while the party is
Again, just to reiterate: when a situation like this happens, I think DMs should treat it as a learning opportunity, not as a botheration to be overwritten.