Noncreature Artifact with MV<=1 in your graveyard.
All other permanents on the battlefield.
Steps
Activate
Salvaging Station by tapping it, returning the artifact from your graveyard to the battlefield.
Activate
Phantom Train by sacrificing the artifact.
Sly Requisitioner triggers, creating a 1/1 Servo artifact creature token.
Resolve the
Phantom Train ability, putting a +1/+1 counter on it and causing it to become a Spirit artifact creature in addition to its other types until end of turn.
Activate
Phantom Train by sacrificing the Servo.
When the Servo dies,
Salvaging Station triggers, untapping
Salvaging Station.
Resolve the
Phantom Train ability, putting a +1/+1 counter on it and causing it to become a Spirit artifact creature in addition to its other types until end of turn.
Repeat.
Notes
If the artifact can sacrifice itself, you can do so in lieu of sacrificing the artifact to
Phantom Train. Also, if the artifact can tap to produce mana (like Sol Ring) or other products, you can do that as well.
Results
Infinite card draw.
Infinite draw triggers.
Near-infinite colorless mana.
Near-infinite creature ETB.
Near-infinite creature LTB.
Near-infinite creature sacrifice triggers.
Near-infinite death triggers.
Metadata
Bracket tag
ExhibitionBracket 1+
For any deck
1
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5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.