Banishing Smite

5th-Level Abjuration
Casting Time: 1 bonus action
Range: Self
Components: V
Duration: (C) 1 minute

As in the Player's Handbook except base damage has been increased to 6d10 and the following was added:

This spell only requires concentration while a creature is banished by the spell, but the spell ends early if you cast it again or cast another smite spell, such as shackling smite or thunderous smite.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d10 for each slot level above 5th.

Source: PHB 216

Changelog

Altered base damage to be 6d10 instead of 5d10
Added upcasting option.
Altered concentration requirement to only be needed when banishment is active.