Inalla, Archmage Ritualist, Apprentice Necromancer, Mana Echoes, and Phyrexian Altar

Prerequisites

• Inalla, Archmage Ritualist on the battlefield or in the command zone
• Apprentice Necromancer in hand
• Mana Echoes on the battlefield
• Phyrexian Altar on the battlefield
• available

Steps

1. Cast Apprentice Necromancer by paying
2. Apprentice Necromancer enters the battlefield, triggering Mana Echoes and Inalla
3. Resolve the Mana Echoes trigger, adding at least
4. Resolve the Inalla trigger, causing you to pay to create a token copy of Apprentice Necromancer with haste
5. The token Apprentice Necromancer enters the battlefield, triggering Mana Echoes, adding at least
6. Activate Phyrexian Altar by sacrificing the nontoken Apprentice Necromancer, adding
7. Activate the token Apprentice Necromancer by paying , tapping and sacrificing it, returning the nontoken Apprentice Necromancer from your graveyard to the battlefield with haste
8. Repeat from step 2

Results

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