https://www.youtube.com/watch?v=d6rUk24k0uc

The Doomsday Combo:
1. Swarm Intelligence
2. Brass's Bounty
3. Reclaim
4. Salvage
5. Treacherous Terrain

The Loop:
Library (top to bottom): Swarm Intelligence, Brass's Bounty, Reclaim, Salvage, Treacherous Terrain
Activate Golos exiling Swarm Intelligence, Brass's Bounty, Reclaim.
  Cast Swarm Intelligence.
  Cast Brass's Bounty, copy using Swarm Intelligence.
    Resolve copied Brass's Bounty, gain Treasure tokens.
    Resolve original Brass's Bounty, gain Treasure tokens.
  Cast Reclaim, copy using Swarm Intelligence.
    Resolve copied Reclaim, put Brass's Bounty on top of library.
    Resolve original Reclaim, fizzles and goes to graveyard. (No legal target in graveyard.)
Library: Brass's Bounty, Salvage, Treacherous Terrain
Graveyard: +Reclaim
Activate Golos, exile Brass's Bounty, Salvage, Treacherous Terrain.
  Cast Brass's Bounty, copy using Swarm Intelligence.
    Resolve copied Brass's Bounty, gain Treasure tokens.
    Resolve original Brass's Bounty, gain Treasure tokens.
  Cast Salvage, copy using Swarm Intelligence.
    Resolve copied Salvage, targeting Brass's Bounty.
    Resolve original Salvage, targeting Reclaim.
  Cast Treacherous Terrain, do damage.
    Resolve Treacherous Terrain.
Library: Reclaim, Brass's Bounty
Graveyard: +Treacherous Terrain, +Salvage

-- Loop of infinite Treasure tokens --
Activate Golo, exiling Reclaim, Brass's Bounty
Cast/copy Brass's Bounty
Cast/copy Reclaim targeting Brass's Bounty, Salvage
Activate Golo, exiling Salvage, Brass's Bounty
Cast/copy Brass's Bounty
Cast/copy Salvage targeting Brass's Bounty, Reclaim
-- Loop repeat --

Replace Brass's Bounty with Treacherous Terrain, do infinite damage.