Ren watched as the players disappeared one after another, feeling rejoicing inside. His true enemies weren't the Bosses but the players contending with him for the kill. Eliminating them was his main goal.
As long as he was the last one standing in the end, then all was good.
Ren was already equipped with [Monarch Sovereignty], and his acquired skill [Monarch's Might] made him immune to all status effects.
Eric was too busy staying alive on his own to notice the stolen scepter in Ren's hand. But even if he did, he hadn't had a good look at the scepter to know what it looked like.
The Heart made another move, [The Madness], targeting an area with the most congregated players and NPCs. Needless to say, they all suffered from [Confusion]. The Primeval Antibody immediately took the opportunity and used [Purge]. Wherever it passed, players and NPCs alike was dragged into its Body.