The Chain Veil, Ashnod's Altar, Ral Zarek, and Elspeth, Sun's Champion

Prerequisites

• The Chain Veil on the battlefield
• Ashnod's Altar on the battlefield
• Ral Zarek on the battlefield
• Elspeth, Sun's Champion on the battlefield

Steps

1. Activate Elspeth's first loyalty ability by putting two loyalty counters on it, creating three 1/1 Soldier creature tokens
2. Activate Ashnod's Altar twice by sacrificing two Soldiers, adding
3. Activate The Chain Veil by paying and tapping it, allowing an extra activation of your planeswalkers' loyalty abilities this turn
4. Activate Ral Zarek's first loyalty ability by putting a loyalty counter on it, untapping The Chain Veil
5. Repeat

Results

• Infinite activations of loyalty abilities of all other Planeswalkers you control
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers