Kaa knows what you mean (rolled natural 1 Will save).
Stacy slashes Kaa (rolled 22) for 11 points of damage. Kaa has 18 HP remaining.
Round 426
Kaa cannot seem to penetrate Stacy's skin (rolled 22-1=21).
Stacy slashes Kaa again (rolled 15) for 14 points of damage. Kaa has 4 HP.
Round 427
Kaa bites (rolled 28-1=27) for 11-5=6 points of damage, then grabs on (27 vs. 22 grapple) and squeezes for an additional 14-5=9 points of damage. Stacy has 10 HP remaining. What next?
Stacy slashes Kaa (rolled 22) for 11 points of damage. Kaa has 18 HP remaining.
Round 426
Kaa cannot seem to penetrate Stacy's skin (rolled 22-1=21).
Stacy slashes Kaa again (rolled 15) for 14 points of damage. Kaa has 4 HP.
Round 427
Kaa bites (rolled 28-1=27) for 11-5=6 points of damage, then grabs on (27 vs. 22 grapple) and squeezes for an additional 14-5=9 points of damage. Stacy has 10 HP remaining. What next?