Emphatic Untamed Calamity/Zenith

The Zenith  is a craftable post-Moon Lord sword. When using the primary (left-click) attack, blue blurred slashes will appear in the direction of the mouse, similar to the Arkhalis and The alternate (right-click) attack will make the player teleport to the cursor's location, leaving a highly damaging slash in their wake. The teleport attack inflict the player the Chaos State debuff and cannot be reused while under it.

Trivia

 * This weapon was implemented as a replacement to a scrapped weapon in calamity known as the UHF Murasama, after the Calamity developers denied the Emphatic Untamed Calamity development team permission to implement it in the add-on.
 * As of 1.4 on Terraria Vanilla, a Post Moon Lord Sword also called Zenith was released, along with similar colors and blurred slashes. However, these are likely not related, as the Terraria Vanilla Zenith has a very different sword shape, and features its crafting components in the swinging, as well as a very different swing.