Invisible Caltrops Trap
Droplets of dried blood dot the floor, as if the area was once the site of a battle.
An area of floor is covered with large, invisible caltrops. A magically invisible chest containing a Minor Treasure sits in the center of the area. The first time each turn a creature enters the area, it triggers a Failure.
Caltrops. An Investigation check or probing the area with a pole or other object reveals the presence of the invisible caltrops. Once a creature is aware of the caltrops, it can use an action to collect or sweep the caltrops from a 5-foot-square space.
Chest. A Perception check or an examination of the floor reveals a rectangular area free of dust (the section of floor beneath the invisible chest). Scattering powder or small objects in the area outlines the chest. The chest contains a Minor Treasure, perhaps a spell scroll of invisible object (DDG).
Spell Effect. This is an illusion effect created by a 3rd-level spell. Casting dispel magic on the caltrops dispels the illusion.
Spell Solve. See invisibility , faerie fire , and similar spells reveal the invisible caltrops.
- A creature can make an Investigation or Perception check to move at half speed through the area without triggering a Failure.
Potential Outcomes
Critical Failure or Failure. The triggering creature makes a Dexterity saving throw . On a failure, it takes 2 (1d4) piercing damage and its walking speed is reduced to 0 until the end of its turn. Thereafter, its walking speed is reduced by 10 feet until it regains at least 1 hit point. A creature that knows the locations of all of the caltrops and moves at half speed through the area automatically succeeds on the saving throw.
Success or Critical Success. The triggering creature avoids the trap.