Threefold Thunderhulk, Phyrexian Altar, and Nim Deathmantle

Prerequisites

• Threefold Thunderhulk on the battlefield
• Phyrexian Altar on the battlefield
• Nim Deathmantle on the battlefield
• available

Steps

1. Activate Phyrexian Altar by sacrificing Threefold Thunderhulk, adding
2. When Threefold Thunderhulk dies, Nim Deathmantle triggers, returning Threefold Thunderhulk from your graveyard to the battlefield, and attaching Nim Deathmantle to it
3. When Threefold Thunderhulk enters the battlefield, it triggers, creating a number of 1/1 Gnome artifact creature tokens equal to its power
4. Activate Phyrexian Altar three times by sacrificing three Gnomes, adding
5. Repeat

Results

• Infinite +1/+1 counters on Threefold Thunderhulk
• Infinite colored mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers