Chandra, Bold Pyromancer, Chandra, Hope's Beacon, Teferi, Who Slows the Sunset, and The Chain Veil

Prerequisites

• Chandra, Bold Pyromancer on the battlefield
• Chandra, Hope's Beacon on the battlefield
• Teferi, Who Slows the Sunset on the battlefield
• The Chain Veil on the battlefield

Steps

1. Activate Chandra, Hope's Beacon's second ability by putting two loyalty counters on it, adding two mana of any color
2. Activate Chandra, Bold Pyromancer's first ability by putting a loyalty counter on it, adding and dealing 2 damage to a player
3. Activate The Chain Veil by paying and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn
4. Activate Teferi's first ability by putting a loyalty counter on it, untapping The Chain Veil and causing you to gain two life
5. Repeat

Results

• Infinite activations of loyalty abilities of all other Planeswalkers you control
• Infinite colored mana
• Infinite damage
• Infinite lifegain
• Infinite lifegain triggers
• Infinite mana permanents you control can produce
• Infinite untap of permanents you control