Flame Blade

Duration: 10 minutes, Concentration
You evoke a fiery blade in your hand. If you let
go of the blade, it disappears, but you can evoke
the blade again as a bonus action. As an action
you can make a melee spell attack. On a hit, the
target takes 3d6 fire damage. The blade sheds
bright light in a 10 ft radius and dim light for an
extra 10 ft.
At Higher Levels. For every two extra spell slot,
the damage increases by 1d6.