Initial Card State
- All permanents on the battlefield.
Steps
- At the beginning of your upkeep, Thopter Spy Network's first ability triggers, creating a 1/1 Thopter artifact creature token.
- At the beginning of your end step, Soulherder's second ability triggers, blinking Myr Battlesphere.
- When Myr Battlesphere enters the battlefield, it and Soulherder's first abilities trigger.
- Resolve the Soulherder trigger, putting a +1/+1 counter on it.
- Resolve the Myr Battlesphere trigger, creating four 1/1 Myr artifact creature tokens.
- Activate Time Sieve by tapping it, sacrificing the Thopter and the four Myrs, causing you to take an extra turn after this one.
- Repeat each turn.
Bracket Tag
This combo has been estimated to be Ruthless (Bracket 4+).