Petrified Tentacle Totem

A sinking feeling in the gut.
The walls seem to breathe and pulse.
A sickeningly glow eminates from the statue.
A petrified tentacle, held up in a natural formed altar.
The form beckons, as if it wants you to approach, and I do.
The yells of my party reach me too late as the floors of the cavern split open, tentacles thrash, and the mage is grappled...
Roll for initiative.