Time Sieve + Myr Battlesphere + Teleportation Circle + Gandalf the White

Time Sieve

Myr Battlesphere

Teleportation Circle

Gandalf the White

How it works

1. At the beginning of your end step, Teleportation Circle triggers, blinking Myr Battlesphere.
2. When Myr Battlesphere enters the battlefield, its first ability triggers twice, creating eight 1/1 Myr artifact creature tokens.
3. Activate Time Sieve by tapping it and sacrificing five Myrs, causing you to take an extra turn after this one.
4. Repeat each turn.

This infinite-turn loop relies on the constant, repeatable blinking power of Teleportation Circle to continuously refresh your board state during each end step. When Myr Battlesphere reappears, the presence of Gandalf the White acts as a powerful amplifier, doubling its entry trigger so you suddenly find yourself flooded with eight Myr tokens instead of four. That surplus of artifact bodies provides the exact fuel needed for Time Sieve's activated ability, letting you sacrifice five of them to instantly claim an extra turn.