In the Players handbook list of spells, one of the level 5 Paladin spells is "Destructive Smite", however I can't find the spell description? Where can I find the description of the spell?
Destructive Smite is most likely renamed to Destructive Wave, as it is also a 5th level spell, and has the same spell description as the spell Destructive Smite which was in the Alpha playtest.
Destructive Smite has been renamed into Destructive Wave as far as I can tell.
This post should have the answer you are looking for. I cannot speak for reliability.