Felhide Spiritbinder, and Ondu Spiritdancer

Prerequisites

• Felhide Spiritbinder on the battlefield
• Ondu Spiritdancer on the battlefield
• Felhide Spiritbinder is tapped
• available

Steps

1. During your untap step, Felhide Spiritbinder is untapped
2. During your upkeep step, Felhide Spiritbinder triggers, causing you to pay to create a token copy of Ondu Spiritdancer with haste
3. When the token Ondu Spiritdancer enters the battlefield, the nontoken Ondu Spiritdancer triggers, causing you to create a copy of the Ondu Spiritdancer token
4. When the new token Ondu Spiritdancer enters the battlefield, the previous token Ondu Spiritdancer triggers, causing you to create a copy of the new Ondu Spiritdancer token
5. Repeat step 4

Results

• Infinite creature tokens with haste
• Infinite ETB