Time Sieve + Myr Battlesphere + Enduring Renewal

Time Sieve

Myr Battlesphere

Enduring Renewal

How it works

1. Cast Myr Battlesphere by paying 7.
2. Myr Battlesphere enters the battlefield, creating four 1/1 Myr creature tokens.
3. Activate Time Sieve by tapping it, sacrificing Myr Battlesphere and sacrificing the four Myr tokens.
4. When Myr Battlesphere dies, Enduring Renewal triggers, returning Myr Battlesphere to your hand from your graveyard.
5. Resolve the Time Sieve ability, causing you to take an extra turn after this one.
6. Repeat each turn.