1887. Trump cards
Turning time back a bit before Alexander's grand demonstration of power.
Noah, Sword Saint, Wilfred, and Divine Demon had just accepted that they had to reveal the trump cards developed in those years to ensure the destruction of the cauldron.
Robert and Steven had sacrificed themselves to stop the new batch of ghosts, so the cauldron was at its emptiest now. It would take a while to create those dangerous beings, and that gave the four experts the chance to prepare their next attacks carefully.
Noah and the others had enough time to launch multiple techniques before the arrival of the next batch of ghosts, but that wasn't their plan. They knew that numbers wouldn't help in that situation. Their attacks could have enough power to damage a rank 9 inscribed item in the middle tier or not. There was nothing in-between at that point.