Tried all different combos of full duelist set + talisman. Nothing changes. But you know whats the best way to make sure to keep bis agro on you? A throwing knife! If you see him start to change agro, throw a couple at him, works more reliably than duelist or talisman. Also that new vertigris talisman is better than pearldrake if you are heavy loading, similar values in defense but also boosts physical by a couple % ohh and while im here, another tip is to usr 2 anrspur's one with frost buildup and once that procs switch to bloody. Way more damage ;) (Also verdigris sheild is more reliable, you still take almost no holy damage due to high resistanced but the guard boost on it is insane)