Ao, the Dawn Sky, Workhorse, Nim Deathmantle, Phyrexian Altar, and Vorinclex, Monstrous Raider

Prerequisites

• Ao, the Dawn Sky on the battlefield
• Workhorse on the battlefield
• Nim Deathmantle on the battlefield
• Phyrexian Altar on the battlefield
• Vorinclex, Monstrous Raider on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Ao, adding one mana of any color
2. Ao dies, triggering itself and Nim Deathmantle
3. Resolve the Ao trigger, putting four +1/+1 counters on each creature and Vehicle you control
4. Activate Workhorse by removing four +1/+1 counters from it, adding
5. Resolve the Nim Deathmantle trigger, causing you to pay to return Ao from your graveyard to the battlefield, and then attach Nim Deathmantle to it
6. Repeat

Results

• Infinite +1/+1 counters on all creatures you control except Ao
• Infinite +1/+1 counters on all Vehicles you control
• Infinite colored mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Put all nonland permanents with mana value four or less from your library onto the battlefield