Tony Vargas said:
Failing 5 saves in a row, when you just need a 7 to save, is a fluke - it's a 0.53% chance of that happening. Not that it doesn't happen, of course, flukes happen, but it was a fluke.
He didn't fail five in a row, though. He succeeded the first time, then got hit with a separate stun power. Then he succeeded on his second save and the rogue stepped in and said "No, you fail".
Then he failed three in a row. I think my feelings mirrored what PCs would have felt. The first failure was met with a mixture of surprise and schadenfreude. The second was schadenfreude and "huh... things are getting kind of boring". The third was "Yeah, this is great and all, but it's definitely boring". When he finally succeeded, I thought "YES! He'll finally start tearing these guys a new one! A single new







that stretches across all five PCs! ... Wait, will he live long enough?"
Three in a row is very unlikely. 2.7%
As for people getting hurt; yes, they did. The wizard did some 12d10 damage to himself, thus giving that same damage to the tarrasque. The warlock took 8d10 to give half of 30d10+72 (worth it!).
I'll be rerunning the combat tomorrow; I expect the tarrasque will do better and the party will be required to scramble more. Or maybe not; the tarrasque has a somewhat low initiative. However, the fact that the fighter needs a 12 or better to hit means that he'll have trouble marking, which means he'll have trouble protecting the squishies. If the tarrasque can get in the scrum and start using its rending bite and passing out ongoing damage... Basically, the battle could go very, very differently.
It's really the tarrasque's low will/reflex scores that let it get hit by abilities in the first place. That and some very odd rolls are what tilted the battle this time round.