In the Sentinels of the Multiverse card game, the Visionary has an ongoing card Mass Levitation with the power:

Until the start of your next turn, reduce damage dealt by environment cards by 3.

The Scum and Villany environment card from the Rook City expansion states:

At the start of the environment turn, the villain character card deals each hero target H minus 1 melee damage and destroys this card.

So, if I had four heroes, Scum and Villany would result in all of my heroes taking three melee damage. Can Mass Levitation's power prevent this damage?

My assumption is that even though the environment card triggers the villain card dealing damage to the heroes, the villain card is the actual source of damage for calculating effects, damage reduction, nemesis damage, etc. Is this assumption correct?