In my main save game, the artefact from Shadowheart changed to my Paladin in the inventory.
On my laptop I have a second score with a Socerer.
With my paladin, the grove could be saved and the lowflings could escape. Halsin had freed himself and found his way back alone. The goblins were wiped out.
With my Socerer there was a conflict with the Tieflings (btw. why are there plot marbles in a role-playing game? You can't kill Mol). Tieflings dead. Halsin freed in prison. Goblins wiped out.
But why did the artefact go into my paladin's inventory by itself in the cutscene? My Socerer had a cutscene in which Shadowheart grabbed the artefact.