Thorsi attempts to betray the Lich, which ends very poorly for the dwarf.
Thorsi leads the Redcaps to the Lich in order to help them kill him. Instead the Lich surprise attacks the Redcaps, and Thorsi is killed for his betrayal.
The amazing imagery displayed in World Anvil is graciously vested by
His Titanship Christopher Dravus of Ironrise Games,
Our Revered Deity Basic Dragon / Rin &
His Majesty Caeora