The best one is the Saber of the Seven. It’s 138 damage and has good durability. You normally can’t repair it with Rock Octoroks, but if you first pop off its fused item in Tarrey Town, then fuse the Saber to some other weapon, a Rock Octorok will repair it! Then you just pay another 20 rupees to pop it off the other weapon and re-fuse a Silver Lynel horn to it. It’s a chore, but it saves you needing a bunch of diamonds to rebuild it.

Another option is a Zora Sword. Use a Splash Fruit to make yourself wet for 20 seconds. It doubles the damage which can then be 140+. Much simpler to repair, but tedious having to use the fruit. Works great in the rain, though, or in wet caves. Or you could make some rainmaker contraption. Or maybe fuse a Hydrant to your shield? I don’t know if you can get wet that way. I think facing a Lynel or Gleeok should make Link wet himself. 😂