The Jolly Balloon Man, Ashnod's Altar, and Sky Hussar

Prerequisites

• The Jolly Balloon Man on the battlefield
• Ashnod's Altar on the battlefield
• Sky Hussar on the battlefield
• available

Steps

1. Activate The Jolly Balloon Man by paying and tapping it, creating a token copy of Sky Hussar that is a 1/1 Balloon with flying and haste in addition to its other types
2. When the Sky Hussar token enters the battlefield, it triggers, untapping all creatures you control
3. Activate Ashnod's Altar by sacrificing Sky Hussar, adding at least one mana
4. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of creatures you control