Your game continues undisturbed for a fair bit, no doubt to the great confusion of those outside.

You are just getting ready to pack it up, when your muscles suddenly seize, and your nerves ignite with pain...

Spoiler
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All take damage:
(5d4)[12] Lighting, and are Paralyzed for 1 round.

A successful Fortitude Save, DC 19, shall Halve(1/2) the damage, and Negate the Paralysis.