Rainbow Periastron Omega is a limited unique gear published in the marketplace by Roblox 
Roblox is a notable creator or influencer verified by Roblox Corporation. Learn more. on May 30, 2014. It could have been purchased for 2,000 Robux and had a stock of 100 copies. It is the eighth variant in the Periastron series. As of April 16, 2025, only 47 copies exist and it has been favorited over 70,300 times.
History[]
Release history[]
| Location | Available from | Available until |
|---|---|---|
| Marketplace (limited unique)This item can be purchased in the Marketplace and can be resold by owners. See all (1417) · Random | May 30, 2014 | Still available |
Appearance[]
It is a sword with a reversed rainbow pattern on the blade. The middle features a silver striped guard with a gem in it. It also emits any color 
Sparkles (except for brown) when equipped in-game and the Q ability is ready, only white sparkles appear on the avatar.
Function[]
When in-game, the user can click once to swing the blade, or double click to Lunge and strike forward horizontally to their mouse/touch location. As an extra effect, while lunging with the sword, it will leave behind a trail of colored waves behind the blade. The waves scroll through the Rainbow, starting at Red and ending at Purple.
Passives[]
Effects[]
The damage for Rainbow Periastron will always deal 40 damage per hit, this is an upgrade from the other Periastron that only deal 27 damage per hit.
20% of all damage dealt is lifestealed, resulting in 8hp recovery per hit. The lifesteal will upgrade to 30% if the Full Color Buff is active (results in 12hp recovery per hit).
When holding Rainbow Periastron, 33% of all damage received is ignored. The damage reduction will upgrade to 50% if the Full Color Buff is active.
Universal[]
Having Mainline Series Periastrons in user's inventory/backpack unlocks Rainbow Periastron's strength and potential further.
Peri-Laser[]
Peri-Laser gets slight cooldown decreases and sourspots (the spinning swords) from the Peri's as Universal becomes stronger, having maxed out Universal (Always plus FCB) makes the cooldown go from 90 seconds to 45 seconds after ability ends. FCB additionally increases the laser's diameter by approximately 1.5x.
Noir Periastron[]
Noir Periastron Psi doesn't unlock any new mechanics, but will increase the strength further.
Ivory Periastron[]
Ivory Periastron activates a passive called Mini-StarShards that will shoot out miniature versions of StarShards aka Ivory Supernova Projectiles that deal 10 damage and have a homing radius of around 8 studs every 0.5 seconds. The fire-rate is increased to 1/3 seconds when FCB is active.
Azure Periastron[]
Azure Periastron Alpha doesn't unlock any new mechanics, but will increase the strength further.
Chartreuse Periastron[]
Chartreuse Periastron Gamma unlocks the ability called Pulse (E), this ability has a 15-second cooldown by default, but decreases to 7.5 seconds when FCB is active.
Amethyst Periastron[]
Amethyst Periastron Kappa unlocks the ability called Singularity (X), this ability has a 15-second cooldown by default, but decreases to 7.5 seconds when FCB is active.
Crimson Periastron[]
Crimson Periastron Mu activates a passive ability called Crimson Pillars that will summon Crimson Pillars every 1 to 3 seconds. When spawning, a red beam becomes visible and it will explode after a half-second delay, dealing 40 damage to anyone hit by it. The fire-rate is increased to 0.2 to 1 second when FCB is active.
Grimgold Periastron[]
Grimgold Periastron Beta activates a passive called Tracker that will tag anyone nearby, slowing them down to 12 studs/s, this also doubles to resetting any speed bonuses the target has. The tag system has a grab radius of 40 studs. With FCB, the Range is buffed to 60 studs, and the slow effect sets to 4 studs/s instead. This tagging triggers every 0.1 seconds.
Full Color Buff (FCB)[]
If the user has the full obtainable mainline series all in their inventory (Noir, Ivory, Azure, Chartreuse, Amethyst, Crimson, and Grimgold), Rainbow Periastron activates the “Full Set” passive, this is described as Full Color Buff (FCB) because it's easier to understand. All of the abilities get large cooldown reductions and buffs that further make it a nightmare to fight Rainbow Periastron. See Effects and Universal for more info on how FCB affects them.
Abilities[]
Peri-Laser | Q[]
Creates an enlarged duplicate of Rainbow Periastron and any unique periastrons you have in your inventory and begins a windup for four seconds. After the windup, fires a beam that extends by 500 studs over 6 seconds that instantly kills regardless of HP or Damage Reduction. This ability has a 90 second cooldown that is reduced to 45 seconds with maxed FCB.
Additional Periastrons act as sourspots (the spinning swords) dealing the opponent's health in damage (usually an instant kill but can be avoided with damage reduction such as Dragonheart Sword and Shield).
Similarly to Crimson Periastron Mu's Q ability, if this ability is somehow prevented from finishing (for example Catalog Heaven Remake's Cleanup function), it will be on permanent cooldown. This ability will be forcefully cancelled if the user is killed at any point during the ability.
Pulse | E[]
A miniature version of Chartreuse's Deflect Barrier lasting for 2 seconds, but with different properties such as deflecting projectiles in all directions rather than towards the nearest player and lacking the regeneration boost of the original. It is also incapable of doing the "Polchart" glitch.
Singularity | X[]
Summons a black hole that lasts 5 seconds, it pulls in players and objects from up to 50 studs away. It is possible to bypass singularity by moving fast enough (also applies to projectiles) but actually escaping singularity if you are captured by it requires a gear that allows you to teleport out of it.
Tech Skill[]
- Peri-Laser's sour spots can kill any HP amount due to doing virtually infinite damage.
- Getting Pulse's upper hitbox to send an opponent upward is a good way to start an aerial combo by following up with Rock Blast (assuming you are in a game where a gear named "Hazel" exists) to reach the opponent and follow up with selected choice.
- Singularity can be used to attract projectiles such as Chartreuse Periastron Gamma's laser and Mega Mallet's nails, trapping a target inside the singularity and doing this can earn you a kill.
- Singularity lasts long enough for Crimson Periastron's ability to hit the center if both abilities are used at once. Allowing a combo named Crimson Kill Confirm. It is possible to escape this during Crimson's windup with Sword of Light's light warp or gears that let you teleport such as Elder Wand though.
- As singularity's pull applies a bodyvelocity, players are susceptible to being unwinged when being pulled in, this also consequently causes singularity to be significantly escapable during Amethyst Periastron Kappa's comet crash ability.
Trivia[]
This section is a trivia section. Please relocate any relevant information into other sections of the article.
- TakeoHonorable announced a finisher in the Gear. Discord Server in which the user flings the opponent to space, then a cutscene plays out where the user chases down the opponent through the galaxy, hits the opponent with a barrage of slashes, and causes a multi-galaxy explosion. This cutscene is subject to be an instant kill regardless of their health and requires every periastron including the unreleased Fuchsia and Hazel Periastrons. However, this was likely scrapped due to Roblox no longer working on gears.
- Before being updated, pressing Q created rainbow-colored projectiles that could strike other players to deal 30 damage per hit, lasting 10 seconds. The user also gained an increase in movement speed when they held the sword. This was the only ability the sword had.
- Typing in "rainbow periastron" in the marketplace will also show the other periastrons.
- Sometimes, using this gear will make transparent items such as The Ice Skull of Nevermoor to lose their transparency.
Gallery[]
