A giant octopus attacks from a deep pool. It has rating 10 per arm. It starts with two arms (MR 20) and adds one arm (MR +10) each combat turn until all eight are fighting.
On a turn, it cannot take more hits than its current total rating. Combine active arms into one rating.
If you kill it, gain 80 experience and roll 1d6 × 10 for gold.