Time Sieve + Myr Battlesphere + Planar Bridge + Transplant Theorist

Prerequisites

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Steps

1. 1Activate Planar Bridge by paying and tapping it, causing you to search your library for Myr Battlesphere and put it onto the battlefield.
2. 2When Myr Battlesphere enters the battlefield, it triggers, creating four 1/1 Myr artifact creature tokens.
3. 3Activate Time Sieve by tapping it, sacrificing Myr Battlesphere and the four Myr tokens, causing you to take an extra turn after this one.
4. 4Activate Transplant Theorist by paying , putting Myr Battlesphere on the bottom of your library from your graveyard.
5. 5Repeat each turn.

Effects

• Infinite turns
• Lock