Hex Parasite, Vorapede, Pitiless Plunderer, and Ashnod's Altar

Prerequisites

• Hex Parasite on the battlefield
• Vorapede on the battlefield
• Pitiless Plunderer on the battlefield
• Ashnod's Altar on the battlefield
• Vorapede does not have a +1/+1 counter on it

Steps

1. Activate Ashnod's Altar by sacrificing Vorapede, adding
2. Vorapede dies, triggering itself and Pitiless Plunderer
3. Resolve the Vorapede trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it
4. Resolve the Pitiless Plunderer trigger, creating a Treasure token
5. Activate the Treasure by tapping and sacrificing it, adding
6. Activate Hex Parasite by paying and removing the +1/+1 counter from Vorapede, giving Hex Parasite +1/+0 until end of turn
7. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely powerful Hex Parasite until end of turn
• Infinite sacrifice triggers