Frog Gear
Grants the ability to swim Allows the ability to climb walls Increases jump speed and allows auto-jump Increases fall resistance 'It ain't easy being green'
5How to craft it
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Tinkerer's Workshop=
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Tinkerer's Workshopthree problems, one slot
You jump higher, you swim properly instead of flailing, and you can grab and climb sheer walls. None of those three is worth its own accessory slot by the time you can put this together, which is exactly why folding them into one item is the point.
The climbing is the part people underrate. In a vertical shaft you can stick to the side, stop, and choose your next move rather than committing to the whole fall, and that changes how you approach the Dungeon and the Underworld before you have a hook you trust.
stacking
The jump and fall protection stack with a separate Frog Leg or any other item in that family, so a spare is not dead weight if you have the slot to spare for it.