Orichalcum armor

Orichalcum Armor is a hardmode armor set and is the alternative to Mythril Armor. Like all Hardmode ore armors, Orichalcum Armor has three different headgear/helmet options, allowing players to focus on magical, melee, or ranged combat, and each changing the set's bonus. Crafting a one-helmet set requires 54 Orichalcum Bars or 216 Orichalcum Ore. Crafting all five pieces requires 78 Orichalcum Bars or 312 Orichalcum Ore.

Upon a successful attack the armor causes a flower petal to fly across the screen at a high velocity dealing extra damage.

Mechanics
Whenever you strike an enemy a Flower petal spawns at the edge of your screen and shoots to the other end of your screen. The Flower petal will always hit the enemy you hit, however it can hit any other enemy that it goes through. The Flower petal deals approximately 18-25 damage to each target it strikes. A flower petal is also spawned when you hit a projectile that can be destroyed when hit. The Flower Petal appears roughly once per second, provided that there is a source of continuous damage.

Trivia

 * The headgear varient appears to resemble Viewtiful Joe's helmet.
 * The full set with the Orichalcum Headgear may be a reference to Andromeda Shun's armor from the Saint Seiya anime series, as the armor, together with the pink color, look very much like Shun's.
 * The armor's effect "Flower Petal" may be a reference to Andromeda Shun's most famous fighting scene in the Saint Seiya anime series, where he fights an enemy that uses roses as his weapon. It could also be a reference to Byakuya Kuchiki's Senbonzakura (a pink petal-like flurry).Terraria 2013-11-13 10-01-02-25.png, resembling Shun's armor and weapon]]
 * The Orichalcum Helmet looks to be a reference to the Onion Knight helmet worn by the protagonists in the original Famicom version of Final Fantasy III.