God-Eternal Kefnet + Jace, the Mind Sculptor + Karn's Temporal Sundering

Prerequisites

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Steps

1. 1Activate Jace's zero loyalty ability, putting Karn's Temporal Sundering on top of your library.
2. 2Pass the turn.
3. 3On your next draw step, when you draw Karn's Temporal Sundering, reveal it due to Kefnet's ability, making a copy that costs less to cast.
4. 4Cast the copy for , granting you an extra turn and returning up to one nonland permanent to its owner's hand.

Effects

• Infinite turns
• Lock