Demon of Dark Schemes, Phyrexian Altar, and Sengir Autocrat

Prerequisites

• Demon of Dark Schemes on the battlefield
• Phyrexian Altar on the battlefield
• Sengir Autocrat in hand
• available

Steps

1. Cast Sengir Autocrat by paying
2. Sengir Autocrat enters the battlefield, creating three 0/1 Serf creature tokens
3. Activate Phyrexian Altar three times by sacrificing the Serf tokens, adding
4. Demon of Dark Schemes triggers three times, causing you to get
5. Activate Phyrexian Altar by sacrificing Sengir Autocrat, adding one mana of any color
6. Demon of Dark Schemes triggers, causing you to get
7. Activate Demon of Dark Schemes by paying and , putting Sengir Autocrat from your graveyard onto the battlefield tapped
8. Repeat from step 2

Results

• Infinite colored mana
• Infinite death triggers
• Infinite energy counters
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers