So I obtained Terraprisma, and as a summoner main completing 1.4 Master Mode I'm kinda bummed that its DPS is only equal to Stardust Dragon while being locked behind what's probably the hardest boss fight in the game. The main differences I notice are that that it attacks slightly slower than the dragon, but it is extremely consistent and faster at acquiring and switching targets on screen. Was kinda expecting a big difference in damage, but I guesssss you can acquire it before even facing Golem if you have the Empress' attack patterns down. The summoner main who the weapon's intended for will definitely find the fight difficult to complete that early, since unless you have the Xeno Staff I don't think summons will have a chance to keep up with her blinding speed. The most consistent summon before that is probably the Raven staff, but they're slower than the Empress so even that might not help too much. Truly unfortunate, since the most reliable way to damage an enemy this fast is by using Chlorophyte bullets. I haven't tried for it as early as possible but I reckon it might need a summoner to class change to ranged, at least for this fight, to make it easier. Someone's probably dreamed up a method of getting it as a pure summoner, though.
Realistically it probably won't see much use if you return to it after the Moon Lord (since at that point the game is "finished"), but if acquired as early as possible it can literally carry a summoner all the way to the end. I suppose that balances it out a little bit but the daytime Empress fight is extremely punishing nonetheless.