Twilight Drover, Illusionist's Bracers, and Phyrexian Altar

Prerequisites

• Twilight Drover on the battlefield
• Illusionist's Bracers on the battlefield
• Phyrexian Altar on the battlefield
• Illusionist's Bracers attached to Twilight Drover
• Twilight Drover has at least one +1/+1 counter on it
• available

Steps

1. Activate Twilight Drover by paying and removing a +1/+1 counter from it
2. Illusionists's Bracers triggers, copying Twilight Drover's ability
3. Resolve both Twilight Drover abilities, creating four 1/1 Spirit creature tokens
4. Activate Phyrexian Altar three times by sacrificing three Spirits, adding
5. Twilight Drover triggers three times, putting three +1/+1 counters on it
6. Repeat

Results

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