Remorhaz
Massive, blue centipedes with neck hoods and red-hot spine spikes. Dwell in arctic climates.
AC 16, HP 47, ATK 3 bite +7 (2d6 + swallow), MV near (burrow), S +5, D +1, C +2, I -3, W +1, Ch -3, AL N, LV 10
Impervious. Immune to cold and fire.
Melt. Non-magical metal objects that touch the remorhaz melt on a d6 roll of 1-3.
Swallow. On a natural attack roll of 18-20, target is swallowed. Total darkness inside and 2d10 damage per round. Remorhaz regurgitates all swallowed if dealt at least 20 damage in one round to the inside of its gullet.
“Remorhaz” is released under the Shadowdark RPG Third-Party License