Sun Titan, Sakashima the Impostor, Loyal Retainers, and Ashnod's Altar

Prerequisites

• Sun Titan in hand
• Sakashima the Impostor in the graveyard
• Loyal Retainers in the graveyard
• Ashnod's Altar on the battlefield
• available

Steps

1. Cast Sun Titan
2. When Sun Titan enters the battlefield you may, return Loyal Retainers to the battlefield
3. Activate Loyal Retainers, targeting Sakashima the Impostor
4. Have Sakashima the Impostor enter as a copy of Sun Titan
5. With Sakashima's enter the battlefield ability, return Loyal Retainers to the battlefield
6. Sacrifice Sakashima to Ashnod's Altar
7. Activate Loyal Retainers, targeting Sakashima the Impostor
8. Repeat

Results

• Infinite colorless mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers