Zenith

The Zenith is a Hardmode, post-Moon Lord, auto swinging, block piercing melee weapon that can be crafted using a variety of swords from across the game progression. Using it will cause the Zenith and one of its component swords (including the components of the Terra Blade) to boomerang towards enemies within a 20-block radius of the cursor and back in large arcing motions. This attack will pass through solid blocks and can be used anywhere on screen similar to the Solar Eruption. Three swords will appear per use, the first of which will always be the Zenith itself. The Zenith has the most complex crafting tree in Terraria, using 14 different base items (10 crafting operations), narrowly beating the Cell Phone which uses 13 items and the Ankh Shield which uses 11.

Trivia

 * A zenith is the highest point of a celestial body relative to the observer, in other words when it is directly overhead.
 * "Zenith" can also mean the point where something is at its most powerful or successful, alluding to the method of obtaining the weapon.
 * It has the most complex and largest crafting tree of any sword in the game, with a total of 14 different swords, beating the Terra Blade, which is one of its ingredients. It has also beaten the Cell Phone, which has a crafting list of 13.
 * With good modifiers, melee accessories and buffs, the Zenith could potentially be the most powerful melee weapon in the game, possibly even competing against the Last Prism for the highest overall DPS.
 * While throwing the weapon, the swords that are used to craft the weapon can be seen as its projectiles.