How can you create a combo with Time Sieve, Biotransference, Helm of the Host, Lena, Selfless Champion?
user
[START OF COMBO]This combo can be formed with Time Sieve, Biotransference, Helm of the Host, Lena, Selfless Champion

Color identity: WUB
Mana cost: 
Steps:
  1. At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Lena with haste.
  2. The Lena token triggers, creating a number of 1/1 Soldier creature tokens equal to the number of nontoken creatures you control.
  3. Activate Time Sieve by tapping it and sacrificing five creature tokens, causing you to take an extra turn after this one.
  4. Repeat each turn.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - Helm of the Host attached to Lena.
  - You control at least four nontoken creatures.
[END OF COMBO PREREQUISITES]
assistant