Interesting interaction with destructive wrath and conjure elemental.

I am running the popular tempest cleric build with a bit of wizard thrown in. I summoned an air elemental, which prompted the game to ask if I wanted to trigger destructive wrath. I haven't tested this, but I'm curious what the effect would be, if any.

Edit: Can confirm this does nothing if triggered. I had hoped it would maybe apply max damage to the next thunder/lightning attack the elemental made, but no such luck.