Create Shardsphere

You create a small sphere of glass designed to shatter at a moment's notice. You produce in your hand a 6 inch diameter sphere of unstable glass that, when thrown or launched, will explode into a cloud of glass shards. Any creature within 5 ft of the sphere when it explodes must make a Dexterity saving throw or take 3d6 slashing damage.

After 24 hours, the magic holding the sphere together becomes unstable, and it will shatter upon any disturbance.

At Higher Levels: The damage the shardsphere causes increases by 1d6 for each level above 1st.