Saheeli, the Sun's Brilliance, Mana Echoes, Village Bell-Ringer, and Energy Refractor

Prerequisites

• Saheeli, the Sun's Brilliance on the battlefield
• Mana Echoes on the battlefield
• Village Bell-Ringer on the battlefield
• Energy Refractor on the battlefield
• Saheeli does not have summoning sickness
• available, plus an additional if you control less than three creatures that share a creature type with Village Bell-Ringer

Steps

1. Activate Saheeli by paying and tapping it, creating a token copy of Village Bell-Ringer with haste
2. When the token Village Bell-Ringer enters the battlefield, it and Mana Echoes trigger
3. Resolve the Village Bell-Ringer trigger, untapping all creatures you control
4. Holding priority, if you control less than four creatures that share a creature type with Village Bell-Ringer, repeat steps 1 through 3 one additional time
5. Resolve all Mana Echoes triggers, adding for each creature you control that shares a creature type with Village Bell-Ringer for each trigger resolved this way
6. Activate Energy Refractor twice by paying , adding
7. Repeat

Results

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