Thran Vigil, and Ashnod's Altar

Prerequisites

• Thran Vigil on the battlefield
• Ashnod's Altar on the battlefield
• The persist creature does not have a -1/-1 counter on it
• It is your turn

Steps

1. Activate Ashnod's Altar by sacrificing the persist creature, adding
2. When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Thran Vigil triggers, putting a +1/+1 counter on the persist creature
4. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers