How can you create a combo with Ravos, Soultender, Time Sieve, Myr Battlesphere?
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[START OF COMBO]This combo can be formed with Ravos, Soultender, Time Sieve, Myr Battlesphere

Color identity: WUB
Mana cost: {7} each turn
Steps:
  1. At the beginning of your upkeep, Ravos triggers, returning Myr Battlesphere from your graveyard to your hand.
  2. Cast Myr Battlesphere by paying {7}.
  3. When Myr Battlesphere enters the battlefield, it triggers, creating four 1/1 Myr artifact creature tokens.
  4. Activate Time Sieve by tapping it, sacrificing Myr Battlesphere and sacrificing the four Myr tokens, causing you to take an extra turn after this one.
  5. Repeat each turn.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Ravos, Soultender must be on the battlefield
  - Time Sieve must be on the battlefield
  - Myr Battlesphere must be in the graveyard
[END OF COMBO PREREQUISITES]
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