Terra Blade

Terra Blade is currently the most powerful sword (Although, it shares its damage with the slower Chlorophyte Warhammer) in the game on the PC version, even stronger than Tizona. With the right items equipped, it can have 176 base damage. It shoots a green sword forward in a line when used. If a flask is buffing the character, the ranged attack will also apply the flask effect to all enemies that it hits.

Trivia
The blade is named after the land of Terraria which already come from latin, "Terra." So considering the night's edge is evil, and excalibur is good, they could neutralize eachother.