Spectre armor

Spectre Armor is a Hardmode, post-Plantera armor set that offers magic weapon boosts. The set consists of the Spectre Robe and Spectre Pants, with either the Spectre Hood or Spectre Mask  headpiece. Wearing a full set causes small white orbs to manifest whenever the player hits an enemy with a magic weapon. What these orbs do depends on the headpiece option chosen. The Spectre Mask causes the orbs to act as homing projectiles, while the Spectre Hood causes the orbs to travel to a player, healing them.

Crafting a full set with one headpiece requires 54 Spectre Bars (27 Ectoplasm and 54 Chlorophyte Bars (324 Chlorophyte Ore). The full set with both headpieces requires 66 Spectre Bars (33 Ectoplasm and 66 Chlorophyte Bars (396 Chlorophyte Ore)).

Spectre Mask :
 * Homing orbs (set bonus): Dealing magic damage spawns orb projectiles on impact that home in on nearby enemies, or the same enemy. Orb damage is 1/2 the damage dealt by the magic weapon fired, before it's doubled by a critical hit. (if a critical hit deals 200 damage, the orb will have 50 base damage)
 * Maximum mana boosted +60
 * Mana usage reduced -13%
 * Magic damage and critical chance boosted +5%

Spectre Hood:
 * Life steal orbs (set bonus): Magic damage dealt by the player spawns healing orbs that fly to the player, restoring health by 20% of damage done (dealing 50 magic damage heals 10 health). In team multiplayer, the player with the lowest health is healed instead.
 * All magic damage dealt by the player is decreased by 40%.
 * All magic damage dealt by the player is increased by 10%.

Tips

 * One of the most efficient ways to play with this armor is by owning both Hood and Mask and switching between them, depending on the situation. This way player will be able to both keep themselves alive and deal continuous high damage.
 * Equipping a full set of Spectre Armor with Hood is effective with the Magic Cuffs or Celestial Cuffs and while using the Razorpine. The Razorpine deals continuous damage which restores health lost from enemies, while these hits taken restore your mana. In ideal conditions, the player won't run out of mana and can keep their health fairly high.
 * Casting long-lasting, multi-hit spells, such as the Nimbus Rod, Rainbow Gun, or Magnet Sphere, is a great way to make effortless use of the set bonuses.
 * The combined effects of Mana Sickness and the Spectre Hood's damage reduction will render many magic weapons too weak to be effective, so players should find an alternate means of restoring mana. Magic Cuffs are surprisingly effective as it capitalizes on any damage taken.
 * A good idea for boss fights/events is to make a "healing station" via the set bonus from the Spectre Hood. To create one, place a few statues in a pool of lava. Wire a 1 second timer to the statues and put two Nimbus Clouds above the spawned enemies, dealing damage and generating life steal orbs. The lava will destroy any drops to clear out the item drop limit, and the healing will compensate for the 30 defense.
 * By equipping enough accessories that boost magic damage (such as a Sorcerer Emblem, Celestial Emblem, and Celestial Stone) it is possible to stack up enough damage increases to completely negate the Spectre Hood's 40% reduction in magic damage.
 * By using a Magic Power Potion, one can negate all but 5% of the reduction to magic damage when using the hood (and a full set), causing greater damage and thus greater healing.

Trivia

 * "Spectre" is another word for ghost or spirit.
 * The female version of the armor, along with having different textures, is slightly more blue than the male version, most notably in the eyes.

History
Armure de Spectre Призрачная броня