Starfield of Nyx + Parallax Wave

Starfield of Nyx

Parallax Wave

How it works

1. Activate Parallax Wave by removing a fade counter from it, targeting any creature an opponent controls.
2. You may repeat step 1 as desired until Parallax Wave has exactly one fade counter on it.
3. Activate Parallax Wave by removing a fade counter from it, exiling itself.
4. When Parallax Wave leaves the battlefield, it triggers, returning all cards exiled with it to the battlefield under their owner's control.
5. Resolve all Parallax Wave abilities from steps 1 and 2, exiling the chosen creatures.
6. Repeat as desired, or whenever a creature enters the battlefield under an opponent's control.
7. You may use this method to blink creatures/enchantments you control if you resolve the Parallax Wave abilities before exiling Parallax Wave.

This looping interaction turns Starfield of Nyx and Parallax Wave into a permanent cage for every creature your opponents control. While Parallax Wave's fading counters would normally spell its doom, its self-exiling activation lets you reset its entire exile history on command, and Starfield of Nyx ensures that when the Wave inevitably hits the graveyard, its static enchantment-recursion brings it right back for another cycle.