Ascendant Blade

You may add your spell casting modifier to the triggering attack if you would not hit the target without it. The target takes an extra 1d10 Radiant damage from the attack. On each consecutive turn you use this spell, This spell does an additional 1d10 + strength modifier radiant damage.

Using a Higher-Level Spell Slot. The initial and bonus consecutive damage increases by 1d10 for each spell slot level above 1.