Tomb of Horrors: DM Entry

The party gets railroaded...literally.

A stone juggernaut rolls over the party, most of which are sleeping.

The eyeball-beholder gets squashed like grape (but later raised from the dead), before the dragonborn finally destroys the thing.



Then later in another room, some haunting melody comes from a bank of fog, dazing some and enthralling the beholder's cohort.  The cohort mindlessly enters the fog.

The wild mage lobs a few fireballs into the fog. And then one of them turns into a living spell, which engulfs the cohort killing it.