Brainstorm by paying , causing you to draw three cards and then put two cards from your hand onto the top of your library. Ensure the top card will be
Venser.
Cast Dack by paying . When it enters, it triggers, revealing
Venser from your library, then putting it onto the battlefield goaded, and then giving control of
Venser to an opponent.
When
Venser enters, it triggers, creating two token copies of
Venser as the original
Venser is under an opponent's control.
Put all but one
Venser into your graveyard due to the legend rule.
The two
Venser tokens' abilities each trigger.
Resolve the first trigger, creating two token copies of
Venser.
Repeat from step 4.
Pay to cast the prepared copy of
Brainstorm, causing you to draw three cards and then put two cards from your hand on top of your library, ensuring that
Venser will be among the cards revealed by Dack.
Cast Dack by paying .
When Dack enters, it triggers, revealing
Venser from your library, then putting it onto the battlefield goaded, and then giving control of
Venser to an opponent.
Venser's ETB ability, which triggered during Step 10, goes on the stack. Target the original
Venser, which is now under an opponent's control, creating two token copies of it.
Put all but one
Venser into your graveyard due to the legend rule.
The two
Venser tokens' abilities each trigger.
Resolve the first trigger, creating two token copies of target permanent an opponent controls other than
Venser or copying target instant or sorcery they control twice.
Resolve any spell copies or ETB triggers created in Step 14.
Resolve the second trigger, creating two token copies of the original
Venser.
Repeat from step 12. Depending on the targets chosen in Step 14, this will result in various other features (such as infinite artifact ETB, landfall, etc.).
Notes
The remaining
Venser triggers can choose either mode as desired and change targets as desired. This can create additional results like infinite artifact tokens, artifact ETB and landfall triggers.
Results
Infinite artifact ETB.
Infinite artifact tokens.
Infinite copies of permanents opponents control.
Infinite creature ETB.
Infinite creature LTB.
Infinite creature tokens with haste.
Infinite death triggers.
Infinite landfall triggers.
Metadata
Bracket tag
ExhibitionBracket 1+
For any deck
1
2
3
4
5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.