The Chain Veil, Xenagos, the Reveler, and Tezzeret the Seeker

Prerequisites

• The Chain Veil on the battlefield
• Xenagos, the Reveler on the battlefield
• Tezzeret the Seeker on the battlefield
• You control at least four creatures

Steps

1. Activate Xenagos' first loyalty ability by putting a loyalty counter on it, adding or for each creature you control
2. Activate The Chain Veil by paying and tapping it, allowing you an additional activation of each of your planeswalkers this turn
3. Activate Tezzeret's first loyalty ability by putting a loyalty counter on it, untapping The Chain Veil and up to one other artifact
4. Repeat

Results

• Infinite ETB
• Infinite red mana
• Infinite creature tokens
• Infinite green mana
• Put all creature cards from your library onto the battlefield
• Infinite mana artifacts you control can produce
• Near-infinite landfall triggers
• Exile your library
• Infinite untap of artifacts you control
• Infinite activations of loyalty abilities of all other Planeswalkers you control
• Put all land cards from your library onto the battlefield