Surly Badgersaur + Library of Leng + Skyswimmer Koi

Prerequisites

• You have a land card in hand or on top of your library.

Steps

1. 1Cast Library of Leng by paying .
2. 2When Library of Leng enters, Skyswimmer Koi triggers, causing you to draw a card and then discard a land card.
3. 3The discarded card is put on top of your library instead of into your graveyard due to Library of Leng.
4. 4Surly Badgersaur triggers, creating a tapped Treasure token.
5. 5When the Treasure enters the battlefield, Skyswimmer Koi triggers, causing you to draw a card and then discard a land card.
6. 6Repeat from step 3.

Effects

• Infinite artifact ETB
• Infinite artifact tokens
• Infinite draw triggers
• Infinite self-discard triggers
• Infinite tapped Treasure tokens