Maxperson
Morkus from Orkus
Or one failed DC 19 con save.it depends... my 6th level bladesinger can call a26 AC, and if he attacks me 3 times it will hurt (he almost for sure will hit me 1 out of 3 tries) but he ain't dropping me without a crit.
my 9th level armor artificer can't call a 26 but walks around with a 21 or 22 and can't be crit, and if he hit me with all 3 attacks he would need to do above average to drop me.
I doubt either of those PCs has 100 hit points, and that Bladesinger probably dies whether he makes the save or not.