Biotransference + Helm of the Host + Lena, Selfless Champion + Time Sieve

WUB identity

Commander legal

The 4 combo pieces

What must be in place

Helm of the Host attached to Lena.
You control at least four nontoken creatures.

How to execute it

  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.

What the combo produces