Dack Fayden, Helping Hand, Venser, Fervent Forger, and Brainstorm

Prerequisites

• Dack Fayden, Helping Hand in hand
• Venser, Fervent Forger in hand
• Brainstorm in hand
• available

Steps

1. Cast Brainstorm by paying , 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
2. Cast Dack by paying
3. 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
4. Venser's ETB ability, which triggered during Step 10, goes on the stack
5. Target the original Venser, which is now under an opponent's control, creating two token copies of it
6. Put all but one Venser into your graveyard due to the legend rule
7. The two Venser tokens' abilities each trigger
8. 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
9. Resolve any spell copies or ETB triggers created in Step 7
10. Resolve the second trigger, creating two token copies of the original Venser
11. Repeat from step 5
12. Depending on the targets chosen in Step 7, this will result in various other features (such as infinite artifact ETB, landfall, etc
13. )

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