Destiny 2 Warlock BuildPrismatic Spam-Cannon (9M+ Damage to Puppeteer)

This build relies extremely heavily on utilizing Powered Melees and Grenades to provide Radiant to you and Weaken to enemies.

Your Exotic Class Item must roll with Apotheosis and Star-Eater; this build will NOT work without both. If you must choose one, choose Apotheosis, but know that your damage will be massively lacking. Star-Eater is just for huge damage (50% more,) but Apotheosis is the kicker for this build.

Use The Call to get the vast majority of your kills; this build will utilize a lot of mods to regain Special Ammo constantly, so there is no need to worry about running out if you play with your brain even half on.

During intensive damage phases, and especially with this season's artifact, it is a very good idea to run Witherhoard in place of Sunshot- replace Sunshot with any old Solar weapon with Incandescent; Zaouli's Bane with Explosive Payload and Incandescent is a personal favourite, the Ammit AR2 is another great choice available from as early as the start of Witch Queen (Stats for All, Incandescent is what my Ammit has), Luna's Howl with Heal Clip Incandescent is another great choice.

The main interactions here, the absolute must-haves, are Arcane Needle being buffed by the Facet of Dawn for consistent Radiant; Vortex Grenade being buffed by Facet Dominance for consistent Weaken, Needlestorm because it does a ton of damage.

What is not needed for this build: Facet of Solitude; it does not play a pivotal role in the build, but it is better than any other option I found to be honest.

Using this setup, I am able to average between 9 and 10 million damage in a fully stacked squad running Vesper's Host's final encounter- 2/3rds of the boss's health dealt solely by me. The build isn't terribly cheap, but it's also not hugely expensive.