Molten Katana
Molten Katanas are rare and powerful weapons that charge heat when attacking which can be expelled as fiery arcs to do massive amounts of damage.
Molten Katanas have a base attack damage of 6, an attack speed of 1.8, nearly the same as an iron sword, but with more speed.
When attacking with a Molten Katana, 1 heat will be gained per attack. After 5 heat is gained, the player will be able to hold right click to charge a "fiery arc" attack, which can be expelled by releasing right click.
There are 3 levels of fiery arcs, each being stronger, faster, and longer lasting than the previous. Each level costs 5 more heat than the last, up to 15. Charging for less time will allow for lower level fiery arcs to be expelled.
Fiery arcs move in a straight line and greatly damage and ignite mobs in their way. They have an unlimited piercing capability, making them the perfect weapon for crowd control. The base damage of fiery arcs counts as fire damage, meaning that it can be reduced using Fire Protection, and mobs that are immune to fire will be immune to fiery arcs.
Katanas can be obtained by trading 10 Rubies to the Vigilante for it, which can only be done after the Wither Skeleton Bounty is completed.
Katanas can be repaired using obsidian.
Molten Katanas very complex weapons, and learning how to use them effectively takes practice. Attacking tougher targets to charge heat and using fiery arcs on weaker targets is effective, as in the long run using fiery arcs on tougher targets will not save much time.
A damage-based Totem of Irregularity is recommended, as well as the Sharpness enchantment due to the Molten Katana's somewhat low base damage compared to other weapons.