Helm of Kaldra, Sword of Kaldra, Shield of Kaldra, and Phyrexian Altar

Prerequisites

• Helm of Kaldra on the battlefield
• Sword of Kaldra on the battlefield
• Shield of Kaldra on the battlefield
• Phyrexian Altar on the battlefield
• available

Steps

1. Activate Helm of Kaldra by paying , creating a legendary 4/4 Kaldra token and attaching Helm of Kaldra, Shield of Kaldra, and Sword of Kaldra to it
2. Activate Phyrexian Altar by sacrificing Kaldra, adding
3. Repeat

Results

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