Alymreus's Anti-magic Blade

You evoke a ethereal blade in your free hand. The blade is similar in size and shape to a longsword, and it lasts for the duration. You can give the blade to another person but it appears in your hand again after they attack with it.

You can use your action to make a melee spell attack with the ethereal blade. On a hit, the target takes 3d10 force damage + spellcasting modifier.

The target takes an additional 1d4 additional Force damage for every spell slot over 5th level.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for every spell slot levels above 5th.