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Choose a Huge or smaller structure you can see within range. If it has 300 or fewer hit points, it is reduced to a small pile of rubble and ash.

A creature inside the structure when this spell is cast can use its reaction to make a Dexterity saving throw. On a success, it escapes the structure untouched and enters an unoccupied space of its choice within 10 feet of the structure. On a failure, the creature takes 8d6 bludgeoning damage and is knocked prone.

At Higher Levels. When you cast this spell using a spell slot of 9th, you can target a Gargantuan or smaller structure and a creature takes 12d6 damage on a failed saving throw.