Soulherder + Eternal Witness + Capture of Jingzhou

Soulherder

Eternal Witness

Capture of Jingzhou

How it works

1. With Soulherder and a creature based spell recursion effect on the battlefield, cast the extra turn spell.
2. Move to end step and target the creature with Soulherder's ability.
3. When creature re-enters the battlefield, target the extra turn spell in your graveyard and return it to your hand, then pass to yourself.
4. Repeat

This elegant loop grants you infinite turns by endlessly recycling your sorcery through persistent creature blinks. During your end step, Soulherder exiles Eternal Witness and returns it to the battlefield, triggering the Witness's entry ability to pull Capture of Jingzhou right back from your graveyard to your hand. As a wonderful bonus, every time a creature is exiled, Soulherder permanently grows stronger with a +1/+1 counter. With your extra turn spell ready to cast again on the next loop, you ensure you never pass the turn back to your opponents.