Exotic Catalyst

Catalysts are special modifiers for Exotic weapons, introduced in the Warmind Expansion for Destiny 2. They improve and upgrade Exotic weapons within the game by either improving stats, giving bonus perks, or raising the magazine size.

Overview
Each weapon has its own Catalyst and has specific objectives to find them. Catalysts function exactly like Masterworks and generate Orbs of Light on multi kills. The drop rate for them is unknown, but they are a rare find. Once you find a Catalyst for a weapon, you will have to do specific objectives with the weapon, such as precision hits or simply kill enemies in order to unlock the upgrade.

List of Catalysts

 * D.A.R.C.I. - Found anywhere in the game. Unlocked with 300 precision kills, the Catalyst will upgrade the gun's stability.
 * Borealis - Found anywhere in the game. Unlocked with 150 Solar kills, 150 Void kills, and 150 Arc kills, the Catalyst will make the gun reload faster. Note that the kills must be done with Borealis, not your Super/Grenades/Melee.
 * Crimson - Found anywhere in the game. Unlocked with 300 precision kills, the Catalyst will increase the gun's range.
 * Tractor Cannon - Found anywhere in the game. Unlocked with 300 kills, the Catalyst will increase the magazine's size (from 4 to 7) and the gun's ammo reserves.
 * The Colony - Found by playing in Crucible matches. Unlocked with 500 kills. The Catalyst will increase the magazine's size and ammo reserves.
 * Jade Rabbit - Found by playing in Crucible matches. Unlocked with 250 PVP kills. The Catalyst will increase the gun's stability.
 * Vigilance Wing - Found by playing in Crucible matches. Unlocked with 250 PVP kills. The Catalyst will make the gun full auto.
 * MIDA Multi-Tool - Found by winning Trials/Competitive matches, and will grant the Outlaw perk.
 * Coldheart - Found in Heroic Strikes or Nightfalls. Unlocked with 300 kills. The Catalyst will make the gun more stable and reload faster.
 * Merciless - Found in Heroic Strikes or Nightfalls. Unlocked with 500 kills. The Catalyst will increase the gun's range and stability.
 * The Wardcliff Coil - Found in Heroic Strikes or Nightfalls. Unlocked with 500 kills. The Catalyst will give a perk that makes the rockets track their targets.
 * Riskrunner - Found in Heroic Strikes or Nightfalls, or by completing the Pain and Gain questline. Unlocked with 600 kills, 300 normal kills and 300 Arc Conductor kills. The Catalyst will increase the gun's range.
 * Skyburner's Oath - Found when completing Leviathan raid sections. It is unlocked with 1,000 Cabal kills and it will increase the gun's range.
 * The Huckleberry - Found when completing Heroic Adventures. It is unlocked with 500 kills and allows kills to completely refill the magazine (instead of partially filling it).
 * Graviton Lance - Found when reaching Rank 50 with Dead Orbit in a Faction Rally. It grants higher range and the Hidden Hand perk.
 * Sunshot - Found when reaching Rank 50 with the Future War Cult in a Faction Rally. Also found in Heroic Strikes or Nightfalls. It grants more range and better stability.
 * Sweet Business - Found when reaching Rank 50 with New Monarchy in a Faction Rally. It grants a perk that reduces flinch when firing the gun.
 * Worldline Zero - Found by shooting 35 Memory Fragments and finding the associated cache. It is unlocked by hitting all five Level 7 bosses in the Escalation Protocol event. The Catalyst makes the Tesseract perk activate quicker.
 * Polaris Lance - Found by completing Nascent Dawn 5/5. Unlocked with 500 kills and 50 kills with the Exotic perk (enemies need to be killed by the burn damage). The Catalyst gives the gun the Dragonfly perk.
 * Whisper of the Worm - Found by completing The Whisper on Heroic difficulty. Unlocked by obtaining Blighted Essence in chests throughout and by completing the mission. Grants Whispered Breathing, which increases precision damage after aiming down the weapon's scope for three seconds and a faster reload speed.
 * Legend of Acrius - Found in Prestige Leviathan encounters and Underbelly chests. After acquiring, you need 500 kills with the weapon. Grants an increased reload speed and the Deeper Pockets perk (magazine size increases from 2 to 6).
 * Sleeper Simulant - Found in sections of Prestige Leviathan, Spire of Stars. After acquiring the catalyst, the first step requires 1000 kills with the IKELOS Shotgun and Sniper, and 2000 kills with the IKELOS SMG (killing enemies with another weapon will count towards progress as long as that particular IKELOS weapon is equipped). Next, you will need to loot the oracle chest from the Whisper of the Worm quest. The last step requires 500 kills with the Sleeper Simulant to fully complete the catalyst. The Catalyst gives the gun deeper reserves and a faster charge rate.
 * Telesto - Found in sections of Prestige Leviathan, Eater of Worlds. After acquiring the catalyst, you need to complete all of the Lost Prophecies from Brother Vance. After that, he will give you the Catalyst. The Catalyst gives the gun deeper reserves (magazine size increases from 4 to 7).
 * Sturm - Found by killing enemies on Nessus. Unlocked by getting 500 kills with both Sturm and Drang. The Catalyst increases the gun's range and handling.
 * Fighting Lion - Found during Festival of the Lost. Unlocked by killing 1000 enemies and turning in 100 bounties. Weekly Festival bounties increase progression faster. Grants the Chimera perk, which increases kinetic and power weapon handling and accuracy after firing.

List of Appearances

 * Destiny 2
 * Warmind
 * Forsaken