God-Eternal Kefnet + Isochron Scepter + Brainstorm + Time Warp

Prerequisites

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Steps

1. 1During the end step before your turn, activate Isochron Scepter by paying and tapping it, casting a copy of Brainstorm without paying its mana cost.
2. 2Resolve Brainstorm, causing you to draw three cards and put Time Warp and another card on top of your library, ensuring Time Warp is the topmost card.
3. 3Move to your turn, drawing and revealing Time Warp during your draw step.
4. 4God-Eternal Kefnet's first ability triggers, causing you to pay to cast a copy of Time Warp.
5. 5Resolve the copy of Time Warp, causing you to take an extra turn after this one.
6. 6Activate Isochron Scepter by paying and tapping it, casting a copy of Brainstorm without paying its mana cost.
7. 7Repeat from step 2.

Effects

• Infinite turns
• Lock