Toph, the First Metalbender, Haru, Hidden Talent, Phyrexian Altar, and Bloodline Pretender

Prerequisites

• Toph, the First Metalbender on the battlefield
• Haru, Hidden Talent on the battlefield
• Phyrexian Altar on the battlefield
• Bloodline Pretender in hand
• available

Steps

1. Cast Bloodline Pretender by paying
2. When Bloodline Pretender enters, Haru triggers, targeting Bloodline Pretender as it is a land due to Toph
3. Activate Phyrexian Altar by sacrificing Bloodline Pretender
4. When Bloodline Pretender dies, Haru triggers, returning Bloodline Pretender from your graveyard to the battlefield tapped
5. When Bloodline Pretender enters, Haru triggers, targeting Bloodline Pretender as it is a land due to Toph
6. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite landfall triggers