Booming Blade

Evocation Cantrip
Casting Time: 1 action
Range: Self
Components: SM* (a melee weapon)
Duration: 1 round

As in Tasha's Cauldron of Everything with the 5-foot limiter removed. Damage also increases again at 23rd level and 28th level.

Source: TCE 106, SCAG 142

Changelog

Altered Attack must be made with a melee weapon, but it does not need to be within 5 feet of the caster, thus this spell works with reach weapons.
Added epic level damage progression.