The Jolly Balloon Man, Great Oak Guardian, and Thermopod

Prerequisites

• The Jolly Balloon Man on the battlefield
• Great Oak Guardian on the battlefield
• Thermopod on the battlefield
• available

Steps

1. Activate The Jolly Balloon Man by paying and tapping it, creating a token copy of Great Oak Guardian that is a 1/1 Balloon with flying and haste in addition to its other types
2. When the Great Oak Guardian token enters the battlefield, it triggers, untapping all creatures you control and giving them +2/+2 until end of turn
3. Activate Thermopod by sacrificing Great Oak Guardian, adding at least one mana
4. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite mana creatures you control can produce
• Infinite red mana
• Infinite sacrifice triggers
• Infinite untap of creatures you control
• Infinitely large creatures you control until end of turn