Boots of Thunderous Entry (5e Equipment)
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Wondrous item, rare
These sturdy steel-toed leather boots are adorned with accents reminiscent of a ram. While wearing them, your footsteps feel stronger than normal, as if stomping over everything in your path.
While wearing the boots, you can use an action to kick open a door, break a lock, or bust into another point of entry. You must make a Strength (Athletics) check as normal to do so, but the boots give you advantage on this check. If you kick a lock, you can use the DC needed to unlock the lock with thieves' tools, if this DC would be lower than trying to break it with a kick. Regardless of whether you succeed or fail, the kick you deliver cracks like a boom of thunder, and is audible up to 300 feet away.
If you successfully kick open a door or another portal with these boots, a thunderous boom of force explodes from the other side of the door as it opens. Any creature in a 30-foot cone on the opposite side of the opened door must make a DC 15 Constitution saving throw. A creature takes 6d8 thunder damage on a failed save, or half as much on a success. Any Medium or smaller creature which fails this save is pushed 10 feet directly away from the door and lands prone.