[RPG] Does the Stone’s Edge feature for the UA Stone Sorcerer work with cantrips

cantripsclass-featurednd-5esorcererunearthed-arcana

At 14th level, Stone Sorcerers (from Unearthed Arcana: Sorcerer) get the Stone's Edge feature, which states:

When you cast a spell that deals damage, choose one creature damaged by that spell on the round you cast it.

Does this work with cantrips, or is it exclusive to 'leveled' spells only?
Also, if I use booming blade and thunderous smite in one attack, does the Stone's Edge ability stack?

Best Answer

Yes, Stone's Edge affects Cantrips

If the feature did not affect Cantrips, it would expressly say so.

Starting at 14th level, your mastery of earth magic allows you to add the force of elemental earth to your spells. When you cast a spell that deals damage, choose one creature damaged by that spell on the round you cast it. That creature takes extra force damage equal to half your sorcerer level. This feature can be used only once per casting of a spell.

Stone's Edge, Unearthed Arcana: Sorcerer

Yes, Stone's Edge can affect multiple spells

There's no language stating this damage may only be dealt once per turn, so it must be able to be applied to both spells.