Tier-1 Items

• Each individual stack has a small chance over time to switch which item it's mimicking.
• Has weighted tiers similar to a T1 chest. Tier weights can be configured.

• Works on most dumbfire projectiles, but not missiles, ground-target AoEs, or deployables.
• Stacks linearly past 100% (becomes a chance to fire a 2nd extra projectile, then a 3rd, etc.).
• Unlock (spoilers!):

  Miss 1000 TOTAL projectile attacks.

• Double healing of and lower tier than Leeching Seed, due to the opportunity cost of dealing damage to enemies, needing to see and hit your probably-juking-very-hard teammates, etc.
• Unlock (spoilers!):

  Have Ukulele, War Horn, and Gorag's Opus all at once.

• Lower range than Focus Crystal, and provides ~1/4 as much damage per stack; however, the effect ceiling is higher if you're willing to put yourself in additional danger.
• Unlock (spoilers!):

  Be within the activation range for this item of 5 or more enemies at once.

• Frozen enemies are stunproof, so only extra damage will occur if a freeze also procs a stun.
• Unlock (spoilers!):

  Stun, then freeze, then ignite the same enemy within 3 seconds (any player may contribute).

• Unlock (spoilers!):

  Fully charge a Teleporter without dying or killing the boss.

Tier-2 Items

• Unlock (spoilers!):

  Block, or take 1 or less points of damage from, 3 attacks in a row.

• Uses equipment's unmodified cooldown and applies its own cooldown reduction. Has a config option to allow other CDR sources like Fuel Cell to also apply, disabled by default.
• Unlock (spoilers!):

  Fall below 25% health, then return above 50%, 9 times in the same run.

• Has a short pickup delay so you don't eat them all instantly if you're moving away from them.
• Pickup range will increase over time to reduce the pressure to chase orbs around constantly.
• It's a Nixie tube.

• Does not apply to healing received from other characters (e.g. someone else's Bustling Fungus stacks), but anyone receiving shared healing from you may receive crit healing.
• Unlock (spoilers!):

  Have any 4 of Bustling Fungus, Monster Tooth, Percussive Maintenance, Lepton Daisy, Interstellar Desk Plant, and Gnarled Woodsprite at once.

Tier-3 Items

• Grants or refreshes charges of a buff. Running into or phasing through an enemy spends a charge to deal damage and stun.
• Unlock (spoilers!):

  Kill a boss with a maximum damage H3AD-5T v2 explosion.

• Overrides gravity, impact fuse time, etc. on affected projectiles to unerringly track towards a target.
• Ding!
• Unlock (spoilers!):

  Have any 3 of Gasoline, Will-o'-the-wisp, Ceremonial Dagger, Frost Relic, Resonance Disc, and Shatterspleen at once.

• Class-specific details (click to expand):

  • Most classes: ~+50% move/launch/jump/etc. speed during Utility skill.
  • Huntress: also has reduced blink duration.
  • MUL-T: reactivate Utility skill up to 3 times while active to extend its duration by 1 second. Boosted speed is applied during this duration.
  • Engi: shield applies a stacking speed buff to anyone inside; missiles can be self-targeted (fire with no targets) to explosive jump.
  • Bandit: Explosive-jump with the blast from your smokebomb.
  • Artificer: teleports to wall location (placeholder, intended effect is launch ramp or icy ground).
  • Captain: small airstrike causes a no-damage blast jump; nuke launch becomes more controllable and displays a trajectory preview. Both grant fall damage prevention until your next collision with terrain.
  • DLC characters: WIP! No item effect yet.
• Unlock (spoilers!):

  Trimp -- jump or fall onto a ramp fast enough that you get launched upwards. Running off a ramp won't work.

• Unlock (spoilers!):

  Complete the achievements for Percussive Maintenance, Defibrillator, Pinball Wizard, and Lodestone.

Equipments

• Rewinds position, velocity, health, shields, barrier, and skill cooldowns/stock (except equipment).

• Can summon equipment drones with random equipment, or item drones with random items.

• Second effect applies to: Monster Tooth, Sticky Bomb, Warbanner, Pixie Tube, Bandolier, Ghor's Tome, Shuriken, Interstellar Desk Plant, Molten Perforator, Forgive Me Please, Preon Accumulator, Primordial Cube, Sawmerang, Effigy of Grief, Egocentrism, Mercurial Rachis.
• Unlock (spoilers!):

  Have any 6 of Bustling Fungus, Focus Crystal, Macho Moustache, Villainous Visage, Razorwire, Unstable Klein Bottle, Frost Relic, Unstable Tesla Coil, N'kuhana's Opinion, H3AD-53T, Little Disciple, Mired Urn, Egocentrism, Blast Shower, and Helfire Tincture at once.

Lunar Items

Lunar Equipments

• *Works only once per player per stage, in addition to a long cooldown in case of very fast stage clears. Both of these are configurable.

Void Items

  (requires Survivors of the Void DLC)

• Unlock (spoilers!):

  Unlocks along with Macho Moustache.

Drones

• Will drop contained items on death.

• Buff is 5% speed, 10% damage, and 15 armor per ally (including self) within 25 m.
• All listed aspects of buff can be configured.

• Incoming damage is multiplied by 5 (configurable).

• Values are not configurable.

• Provides a config option (disabled by default) to force one-hit protection while this artifact is off, even while cursed (e.g. Artifact of Glass).

• Provides a config option to control the level of detail of chat announcements when an item is taken.
• Provides a config option to control the level of detail of chat announcements when the boss is killed.