Cragblade

You slam a weapon into the ground, causing jagged stone to stick the weapon. The weapon now deals Bludgeoning damage instead of its normal type, and is considered magical for the purposes of overcoming resistsances. Additionally, it deals an extra 2d6 Bludgeoning damage on hit.

If you lose concentration on this spell before 1 minute has passed, the effects linger until the next successful hit.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 2d6 for each slot level above 2nd.