Marius draws his weapon and charges the crab. Why don'tcha pick on someone..uh the ranger stammers double your size, eh? he tries to protect Tazmara, blocking any additional attacks while slashing the creature himself.
SpoilerAttack (1d20+4)[14]
Spoiler: Crit?(1d20+4)[22]
Damage: (1d8+3)[7]If Tazmara is attacked, using AoO to improve her AC by +2 via the aid another action/Bodyguard feat:
Spoiler: Bodyguard?(1d20+4)[20]
Miss chance (3d100)[39][32][70](141) (each result giving percentage for any attack)