Rodolf Duskbringer, The Peregrine Dynamo, and Ashnod's Altar

Prerequisites

• Rodolf Duskbringer on the battlefield
• The Peregrine Dynamo on the battlefield
• Ashnod's Altar on the battlefield
• An additional creature card with mana value less than the amount of life you've gained this turn in your graveyard
• Rodolf Duskbringer is not your commander
• You have gained at least 3 life this turn
• available

Steps

1. At the beginning of your end step, Rodolf Duskbringer triggers, allowing you to pay
2. When you do, put Rodolf Duskbringer's ability on the stack targeting any creature in your graveyard
3. Holding priority, activate The Peregrine Dynamo by paying and tapping it, targeting Rodolf Duskbringer's ability
4. Holding priority again, activate Ashnod's Altar by sacrificing The Peregrine Dynamo, adding
5. Resolve The Peregrine Dynamo's ability, copying Rodolf Duskbringer's ability targeting The Peregrine Dynamo
6. Resolve the copied ability, returning The Peregrine Dynamo from your graveyard to the battlefield
7. Repeat from step 3

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers