Death's Presence, Phyrexian Altar, and Triskelavus

Prerequisites

• Death's Presence on the battlefield
• Phyrexian Altar on the battlefield
• Triskelavus on the battlefield
• available

Steps

1. Activate Triskelavus by paying and removing a +1/+1 counter from it, creating a 1/1 Triskelavite artifact creature token
2. Activate Phyrexian Altar by sacrificing the Triskelavite, adding
3. When the Triskelavite dies, Death's Presence triggers, putting a +1/+1 counter on Triskelavus
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers