Swamp's Blade

You evoke an earthen blade in your free hand, covered in bones and fungi. The blade is similar in size and shape to a scimitar, and it lasts for the duration. If you let go of the blade, it disappears, but you can evoke the blade again as a bonus action.

You can use your action to make a melee spell attack with the blade. On a hit, the target takes 3d6 slashing damage and is poisoned.

The blade deals an extra 1d6 damage to undead.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for every two slot levels above 2nd.