Destiny 2 Euphony Boost

• Guaranteed Exotic: the order ends when Euphony is in your collection.
• Attempts to get the Exotic: Last Boss Kills sets 1 Kill, 2 Kills or 3 Kills of The Witness, and the exotic may or may not drop.
• Catalyst & Masterwork: Catalyst Obtain gets the catalyst, and Catalyst Masterwork finishes its objective of 400 defeated targets.
• Self-play (Sherpa): you play the kills with the team.

A booster usually starts within about 1 hour. The finish time is flexible: the Guaranteed Exotic route can take many clears, while a set number of kills ends with the last one.

The catalyst also comes from Salvation's Edge. Once masterworked it adds Enlightened Action, which speeds up reload and handling while you deal damage. Many raid triumphs list a higher starting drop rate for Euphony as a reward: Master Difficulty, At All Costs (a clear with no deaths), Unified Front and the ten encounter challenge triumphs. Every copy rolls the same fixed perks: Arrowhead Brake, Particle Repeater, Spindle and Short-Action Stock.

• The Final Shape owned and its campaign completed, so that Salvation's Edge is open.
• For Catalyst Masterwork: the catalyst on the account, or Catalyst Obtain in the same order.

Which boss do the kills count on?

The Witness, the final boss of Salvation's Edge.

Can I take the catalyst without the masterwork?

Yes, Catalyst Obtain and Catalyst Masterwork are separate boxes.