Hex Parasite, Kheru Bloodsucker, Vorapede, and Phyrexian Altar

Prerequisites

• Hex Parasite on the battlefield
• Kheru Bloodsucker on the battlefield
• Vorapede on the battlefield
• Phyrexian Altar on the battlefield
• Vorapede does not have a +1/+1 counter on it

Steps

1. Activate Phyrexian Altar by sacrificing Vorapede, adding
2. Vorapede dies, triggering itself and Kheru Bloodsucker
3. Resolve the Vorapede trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it
4. Resolve the Kheru Bloodsucker trigger, causing each opponent to lose 2 life and you to gain two life
5. Activate Hex Parasite by paying , two life and removing the +1/+1 counter from Vorapede, giving Hex Parasite +1/+0 until end of turn
6. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite LTB
• Infinitely powerful Hex Parasite until end of turn
• Infinite sacrifice triggers