You create a molten longsword that appears in your hand and lasts for the duration or until you cast this spell again. This blade floats when you are not holding it. While the spell is active you can store the weapon in a pocket dimension and call it to your hand at will. When you cast the spell, and as a bonus action on your subsequent turns you can move the weapon up to 20 feet and make up to 2 melee spell attacks. You can direct the attacks at the same target or at different ones as long as they are within 5ft of the blade. On a hit, the target takes fire damage equal to 1d8 + your spellcasting ability modifier.

The blade scores a critical hit on a roll of 19 or 20 on the d20.

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher you can make a 3rd attack with this blade.