Well i got bored of waiting for responses so i just beated him with a daybreak.According to the wiki, Meowmere can make farming the lord easier because it autoswings so you can just run along asphalt and swing the sword behind you as you run; in addition, as the use times are almost the same, at aprox 4 swings a second, Meowmere will do as much, or more, damage per hit of the sword, than a full 8 stacks of spears will DoT.