Wan Shi Tong, All-Knowing, Sage of the Falls, and Library of Leng

Prerequisites

• Wan Shi Tong, All-Knowing on the battlefield
• Sage of the Falls in hand
• Library of Leng on the battlefield
• available

Steps

1. Cast Sage of the Falls by paying
2. When Sage of the Falls enters, it triggers, causing you to loot
3. The discarded card will be put on top of your library instead of into your graveyard due to Library of Leng
4. Wan Shi Tong's second ability triggers, creating two 1/1 Spirit creature tokens
5. When the Spirits enter, Sage of the Falls triggers twice
6. Resolve the first trigger, choosing not to draw a card
7. Resolve the second trigger, causing you to loot
8. The discarded card will be put on top of your library instead of into your graveyard due to Library of Leng
9. Repeat from step 3

Results

• Infinite self-discard triggers
• Near-infinite ETB
• Infinite draw triggers
• Infinite looting
• Near-infinite creature tokens