Omega Godly Bronze Shortblade of the Outer Cosmos

The Omega Godly Bronze Shortblade of the Outer Cosmos, OGBSOC more briefly, is an extremely rare

shortsword found in Sword Shrines after Golem has been defeated. It is an extremely powerful shortsword. It has no damage class, and such cannot benefit from damaging increasing accessories.

It is a 1/100,000 (0.001%) drop rate in Normal Mode, and a 1/50,000 (0.002%) in Expert. Other than that, it has a very complex crafting recipe that can only be obtainable Post-Phantom, Warmode.

When swung, it shoots out a controllable beam, similar to the Last Prism. Then, the player can hold it down and move it in any direction they want. As it is classless, there is no mana involved.

There is a second attack as well, which shoots out a bunch of identical variants of the sword that follow the player's mouse, similar to the Flying Knife. They only dissapear when the player stops holding.

The third and final attack is a boring old sword projectile, which acts identically to the True Excalibur's.

The player can right click to change to a different attack.

Crafting
Crafted at: Demon Altar
 * 1 Copper Shortsword
 * 1 Tin Shortsword
 * 1 Iron Shortsword
 * 1 Lead Shortsword
 * 1 Platinum Shortsword
 * 1 Gold Shortsword
 * 200 Copper/Tin Bars
 * 450 Demonite/Crimtane Bars
 * 400 Hallowed Bars
 * 400 Titanium/Adamantite Bars
 * 400 Chlorophyte Bars
 * 175 Shroomite Bars
 * 200 Spectre Bars
 * 150 Luminite Bars
 * 150 Cryotic Bars
 * 150 Aridite Bars
 * 150 Verdantite Bars
 * 150 Enagorium Bars
 * 200 Souls of Bright
 * 175 Earthenite Bars
 * 175 Sharkruptor Fins
 * 120 Tredectuplite Bars
 * 210 True Peasant Gel
 * 1 Anvil
 * 1 Mythril/Orichalcum Anvil
 * 1 Demonic Anvil
 * 1 Earthen Manipulator
 * 1 Ancient Manipulator
 * 1 Adamantite/Titanium Forge
 * 1 Hellforge
 * 1 Furnace

In total, this would need 32 Inventory slots worth of items. That's over half of your inventory full.

Tips
If the player has the patience to go through 25,000 worlds, this would help them greatly throughout the game. However not many have that patience, so working towards the crafting recipe may be a better option.