Soulherder + Eternal Witness + Temporal Manipulation

Prerequisites

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Steps

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

Effects

• Infinite turns
• Lock