Grinding Stairs


 

A spiral stairway ascends upwards.

Mechanical Trap

When a trap door is opened at the top of the stairs, the stairs begin to rotate like a drill bit, driving characters on the stairs upwards.

A DC 14 Wisdom (Perception) check reveals gears under the floor at the base of the stairs.

The stairway ends in a false trap door. When opened, it reveals a stone slab 3 inches above the door, and activates the trap.

The stairs move upwards at 5 feet per round. Anyone within 5 feet of the ceiling takes 2d6 bludgeoning damage at the beginning of their turn.

In order to move downwards, a successful DC 12 Dexterity (Acrobatics) check must be made for each movement attempted. Failure results in the target falling prone and no movement. Each move taken is at 1/5th normal movement, so 2 move actions from a 30′ base move would result in 7 feet of movement downwards (12 feet – 5 feet).

A DC 12 Dexterity check with thieves’ tools disables the gears and stops the stairs from rotating.

Categories: 5e, Dungeons and Dragons, mechanical | Tags: , | Leave a comment

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