Opalescence, and Parallax Wave

Prerequisites

• Opalescence on the battlefield
• Parallax Wave on the battlefield

Steps

1. Activate Parallax Wave by removing a fade counter from it, exiling a creature you control
2. Activate Parallax Wave again by removing a fade counter from it, targeting a creature an opponent controls
3. In response, activate Parallax Wave again by removing a fade counter from it, exiling itself
4. Parallax Wave's last ability triggers, returning itself and other creatures exiled by Parallax Wave to the battlefield
5. Let the remaining ability resolve, permanently exiling the creature your opponent controls
6. Repeat

Results

• Exile all creatures opponents control
• Exile all creatures that enter the battlefield under an opponent's control
• Infinite blinking
• Infinite ETB
• Infinite LTB