Elemental Burst

When you cast this spell, you designate a target point—an item composed of one of the five elements. The item then releases the magical energy within it in a sudden, explosive burst out to a 10 ft. sphere. The effects of the burst depend on the element that makes up the target item:

• Earth (Wood, Metal, or Stone): The item bursts, throwing off sharp slivers. Creatures within the burst take 1d6 points of damage (no damage with a successful Dexterity save).
• Fire: The fire shoots out glowing sparks, causing 1d6 points of damage (no damage with a successful Dexterity save).
• Water: Water pushes out in a sharp wave, knocking creatures within the burst prone (a successful Strength save allows an affected creature to remain standing).
• Air: Air compresses rapidly creating a vacuum, creatures within burst have movement reduced to 0 until end of their next turn (a successful Strength save allows an affected creature to remain standing). 

The Spell does not noticeably affect the structure of the target item. At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, you increase the number of damage die by 1 for Earth and Fire. When Water or Air is cast using a 2nd level slot or higher the save imposes disadvantage and the target must repeat the saving throw each round for a number of rounds equal to the spell level used or continue either falling prone or movement negated.