Halana, Kessig Ranger, Ashnod's Altar, and Broodhatch Nantuko

Prerequisites

• Halana, Kessig Ranger on the battlefield
• Ashnod's Altar on the battlefield
• Broodhatch Nantuko on the battlefield
• You have a way to cause a creature to enter the battlefield under your control
• You have a way to give Broodhatch Nantuko indestructible
• available

Steps

1. Give Broodhatch Nantuko indestructible, if needed
2. Cause a creature to enter the battlefield under your control
3. Halana triggers, causing you to pay to have that creature deal damage equal to its power to Broodhatch Nantuko
4. Broodhatch Nantuko triggers, causing you to create a number of 1/1 Insect creature tokens equal to the damage dealt
5. When the Insect(s) enters the battlefield, Halana triggers that many times
6. Holding priority, activate Ashnod's Altar by sacrificing an Insect, adding
7. Resolve the Halana trigger, causing you to pay to deal 1 damage to Broodhatch Nantuko
8. Repeat from step 4

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers