Inalla, Archmage Ritualist, Bloodline Necromancer, and Ashnod's Altar

Prerequisites

• Inalla, Archmage Ritualist on the battlefield or in the command zone
• Bloodline Necromancer in hand
• Ashnod's Altar on the battlefield
• available

Steps

1. Cast Bloodline Necromancer by paying
2. When Bloodline Necromancer enters the battlefield, it and Inalla trigger
3. Resolve the Bloodline Necromancer's trigger, doing nothing
4. Holding priority, activate Ashnod's Altar by sacrificing Bloodline Necromancer, adding
5. Resolve the Inalla trigger, causing you to pay to create a token copy of Bloodline Necromancer with haste
6. When the token Bloodline Necromancer enters the battlefield, it triggers, returning Bloodline Necromancer from your graveyard to the battlefield
7. Repeat from step 2

Results

• Infinite colorless mana
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers