7 Celestial stone: Probably the best possible item for a melee set
6 Frostspark boots: You just can't play without them, they are the base for everything
5 Master ninja gear: Mainly because of the dash, it saves you a lot of time (and hits as well)
4 Fishron wings: Paint them black, and they'll look neat.
3 Flairon: Best melee weapon hands down. I managed to get to the last wave of the pumpkin moon just by flying around and spamming bubbles (no potions, no traps, NOTHING, not even a flask. Just a couple of healing potions)
2 Death sickle: First, it has a very good dps, especially when used against big stuff or waves. Second, it can hit through walls, which makes it irreplaceable and extremely useful, especially in the dungeon, where it is the best weapon you can possibly have. Third (probably because i'm using the fire gauntlet) it's the best way to find minerals besides potions. Wanna have a clear idea of what's surrounding you? spam a few hits and you'll see everything perfectly fine.
Definitely the best weapon in the game IMO (too bad it just can't compete with the flairon, the razorpine ecc. during the pumpkin/frost moon).
1 Rod of discord: Do i really have to explain why this is my favourite item?
I found it before even defeating skeletron prime ( pretty sure about it) and it saved my life countless times against bosses (especially plantera).
Forget about using doors or pickaxes, just teleport wherever you wish.
It can also make you travel a little bit faster, which isn't bad at all.