The sword, the ancient sword. Or to be exact, swords.
2* Wyvern Sword
3* Dragon Sabre
4* Flaming Wyvern Sabre, Cold Wyvern Sabre, Cursed Wyvern Sabre
5* Scorching Dragon Blade, Freezing Dragon Blade, Haunted Dragon Blade
You can guess how the status effects are. The swords do Elemental. However, below 4* they do not deal status effects.
The speed is slow, and the charge attack is a long shot of concentrated fire, it does not go away on contact, and monsters get attacked by it with constant damage. The 5* one's charge has a not easily noticed dragon coming out of the fire. With the freezing ones, it shoots out a long white-ish blue-ish blast, same thing as fire, except it causes freeze. The curse ones would be purple, dealing curse.
The sword would be extremely expensive. It would be very rare. Maybe it could be sold by the Specialist in the Hall of Heroes.
I hope you like my idea, and feedback is appreciated, as long as it is polite, and consists of no swearing.
Trymal
Could you explain how the weapon functions?
Number of strikes?
Charge attack explanation
When status can be applied?
Other abilities
Similar to what current weapons?