Dominion Saboteur without a +1/+1 counter on it and not copying a Human).
Notable Prerequisites
You control a non-Human creature other than
Dominion Saboteur that has a -1/-1 counter on it.
Steps
Activate
Shilgengar by sacrificing
Dominion Saboteur.
When
Dominion Saboteur dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it. As it enters, choose to have it copy a non-Human you control with a -1/-1 counter on it, and then also enter with a -1/-1 counter on it.
Resolve the
Shilgengar ability.
Repeat.
Results
Infinite Blood tokens.
Infinite artifact tokens.
Infinite creature ETB.
Infinite creature LTB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Metadata
Bracket tag
ExhibitionBracket 1+
For any deck
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1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.