Holy Weapon

[ Arme sacrée ]
level 5 - evocation
Casting Time: 1 bonus action
Range: Touch
Components: V, S
Duration: Concentration, up to 1 hour

Description not available (not OGL).
But here is a summary:

The touched weapon shines, deals an extra 2d8 radiant damage, and can burst on a 30-ft radius (Save or 4d8 radiant).
Cleric
Paladin
Xanathar´s Guide to Everything
  1. DnD 5e Spells › Holy Weapon