One of these rare trace rifles is Coldheart. It's definitely not the most appealing weapon in the game due to trace rifles, in general, being so weak and downright useless, but players who like to collect everything will still need to know where to get Coldheart's catalyst and how it improves the trace rifle in Destiny 2.
Coldheart is among the oldest weapons in the game, dating back to the first season of Destiny 2. In fact, original fans of the Destiny franchise will fondly remember Coldheart as the pre-order Exotic weapon for those who pre-ordered Destiny 2 before its first release.
Nowadays, Coldheart is a random drop. It can be acquired from Exotic engrams that randomly drop in the world or bought from Xur on the weeks that he sells it, or by buying his Exotic engram for Legendary Shards or an Exotic Cipher. A bit of good RNG is needed to get it, but considering it's not a must-have weapon, players shouldn't be in a hurry to earn it.
It's a bit unclear exactly how the Coldheart catalyst drops, but it seems that Nightfall strikes are the go-to place to grind for it. More specifically, it's stated that only the strongest of enemies will drop the catalyst, so most likely defeating bosses will give players a chance to earn it.
Since higher difficulties usually mean better loot, players should attempt to play at the highest possible level they can afford. The ideal choice would be Grandmaster Nightfalls, but given the requirements for this activity, it can be difficult for the average player.
Players will now need to score kills with Coldheart to upgrade the catalyst. The number of kills required is about 500, and what makes this task more annoying is the fact that Coldheart requires Special ammo. Players will want to slap on some ammo finding and ammo scavenging mods if they wish to complete the catalyst quickly.
The catalyst for Coldheart is one of the most underwhelming ones in the game. The only benefit it really provides is a stat boost for the weapon, which isn't necessarily a bad thing, but when compared to some other Exotic catalysts, it's definitely among the worst.
Luckily, Coldheart is already a pretty decent weapon even without its catalyst. Its Cold Fusion and Longest Winter perks ensure that when players aim and shoot at a single target, the laser is continuous and does more damage the longer players stay on the target.
Coldheart isn't a weapon that will see any use in season 16's meta. Just like most trace rifles in the game, with the exception of maybe Ager's Scepter, it's mostly a useless, gimmicky weapon that will pop up in some activity bounties every once in a while.
Because of this, players shouldn't focus their time on grinding out its catalyst. Perhaps if Bungie has a trace rifle meta sometime in the future, things might change, but for now, that time and effort can be invested in other, more powerful Exotic weapons.
Plus, even if players like to include trace rifles in their builds, Coldheart has one of the worst catalysts out there, so it's actually better to focus on a weapon that has better utility, like Ager's Scepter.
Destiny 2: The Witch Queen is available on PC, PlayStation 4, Xbox One, PlayStation 5, and Xbox Series X/S.