Geralf, the Fleshwright, Sidisi's Faithful, and Chakram Retriever

Prerequisites

• Geralf, the Fleshwright on the battlefield
• Sidisi's Faithful in hand
• Chakram Retriever on the battlefield

Steps

1. Activate a mana-producing creature by tapping it, adding at least
2. Cast Sidisi's Faithful by paying
3. Geralf's first ability and Chakram Retriever trigger
4. Resolve the Chakram Retriever trigger, untapping the mana-producing creature
5. Resolve the Geralf trigger, creating a 2/2 Zombie Rogue creature token
6. When the Zombie Rogue enters, Geralf's second ability triggers, putting a number of +1/+1 counters on it
7. Resolve Sidisi's Faithful
8. When it enters, its exploit ability triggers, exploiting the Zombie Rogue
9. Sidisi's Faithful's second ability triggers, returning itself from the battlefield to your hand
10. Repeat

Results

• Infinite +1/+1 counters on a creature token
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite storm count