Soleless Sandals
Wondrous item, rare (requires attunement)
These sandals have no sole and they amplify the sensation of the ground beneath your feet. While wearing the sandals, you have tremorsense out to 10 feet. If you already have tremorsense, wearing the sandals increases its range by 10 feet.
Staggering Fissure. As an action while wearing the sandals, you can stomp the ground to cause vibrations along the ground within a 5-foot-wide, 30-foot-long line. Each creature in that area must make a DC 15 Dexterity saving throw. On a failure, a creature takes 3d10 bludgeoning damage and falls prone. On a success, a creature takes half as much damage and its walking speed is reduced by 10 feet until the end of its next turn instead. Once this property has been used, it cannot be used again until next dawn.