The Chain Veil, Ashnod's Altar, Teferi, Who Slows the Sunset, and Elspeth, Sun's Champion

Prerequisites

• The Chain Veil on the battlefield
• Ashnod's Altar on the battlefield
• Teferi, Who Slows the Sunset 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 Teferi's first loyalty ability by putting a loyalty counter on it, untapping The Chain Veil and up to other other creature and/or land you control, and causing you to gain 2 life
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 lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite mana lands you control can produce
• Infinite mana permanents you control can produce
• Infinite sacrifice triggers
• Infinite untap of lands and creatures you control