Myr Battlesphere, Nim Deathmantle, Phyrexian Altar, and Bosh, Iron Golem

Prerequisites

• Myr Battlesphere on the battlefield
• Nim Deathmantle on the battlefield
• Phyrexian Altar on the battlefield
• Bosh, Iron Golem on the battlefield
• available

Steps

1. Activate Phyrexian Altar by sacrificing Myr Battlesphere, adding
2. Nim Deathmantle triggers, causing you to pay to return Myr Battlesphere from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. Myr Battlesphere enters the battlefield, creating four 1/1 Myr creature tokens
4. Activate Phyrexian Altar by sacrificing four Myr tokens, adding
5. Repeat for infinite
6. Activate Bosh by paying and sacrificing Myr Battlesphere
7. Nim Deathmantle triggers, causing you to pay to return Myr Battlesphere from your graveyard to the battlefield, and attach Nim Deathmantle to it
8. Myr Battlesphere enters the battlefield, creating four 1/1 Myr creature tokens
9. Resolve the Bosh ability, dealing 7 damage to any target
10. Repeat from step 6

Results

• Infinite colored mana
• Infinite creature tokens
• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers