Saheeli, the Sun's Brilliance, Mana Echoes, Chromatic Orrery, and Sky Hussar

Prerequisites

• Saheeli, the Sun's Brilliance on the battlefield
• Mana Echoes on the battlefield
• Chromatic Orrery on the battlefield
• Sky Hussar on the battlefield
• Saheeli does not have summoning sickness
• available

Steps

1. Activate Saheeli by paying and tapping it, creating a token copy of Sky Hussar with haste
2. When the token Sky Hussar enters the battlefield, it and Mana Echoes trigger
3. Resolve the Sky Hussar trigger, untapping all creatures you control
4. Resolve the Mana Echoes trigger, adding for each creature you control that shares a creature type with Sky Hussar
5. Repeat

Results

• Infinite ETB
• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens with haste
• Infinite untap of creatures you control