Shroomite armor

Shroomite Armor is a Hardmode, post-Plantera armor set that boosts the effectiveness of ranged weapons. It also features a "stealth" effect that turns the player partially invisible, and further boosts weapons, when the player stands still. It is one of three armor sets available after defeating Plantera, the others being Beetle armor and Spectre armor.

With a full set equipped, standing still causes a player to enter stealth mode: Over the course of roughly 1.5 seconds, the player will gradually turn almost fully transparent, which also diminishes the chance that enemies will target the player. Additionally, during this time, weapon damage, critical strike chance, and knockback will each be boosted gradually up to maximums of +45% damage and +10% critical chance at full stealth. These boosts increase both weapon and ammo damage. The buff begins fading quickly with movement.

Shroomite armor has three headpiece options, each providing an extra +15% damage boost that affects a different ranged weapon type:
 * Shroomite Headgear for arrows
 * Shroomite Mask for bullets
 * Shroomite Helmet for rockets

Some ranged weapons do not receive this specialized boost from any of the three options (eg. Star Cannon, Piranha Gun and Flamethrower), though they still receive the set stealth boost.

Crafting Shroomite Armor requires Shroomite Bars (crafted from Chlorophyte Bars via the Autohammer, which is in turn purchased from the Truffle NPC). Crafting a full set with a single headpiece requires 54 Shroomite Bars (or 810 Glowing Mushrooms and 324 Chlorophyte Ore). A full set with all three headpieces requires 78 Shroomite Bars (1170 Glowing Mushrooms and 468 Chlorophyte Ore).

Tips

 * The set does not truly make you invisible, as the armor glows a deep blue. For PvP purposes, consider using Familiar clothes in conjunction with Shroomite armor, and with no visible accessories. With stealth active, this can render your character completely invisible to other players. Also see Invisibility Potion.
 * Some Dye combinations make your character sprite appear very near invisible at Night. Provided below are several links to photos from testing.

Trivia

 * Shroomite Armor is the only hardmode ore crafted armor that has headpieces with the same amount of defense.

History
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