Crookshank Kobolds + Leyline of Singularity + Phyrexian Altar + Yomiji, Who Bars the Way

URW identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Phyrexian Altar by sacrificing Crookshank Kobolds, adding one mana of any color.
  2. Yomiji triggers, returning Crookshank Kobolds from your graveyard to your hand.
  3. Cast Crookshank Kobolds by paying {0}.
  4. Repeat.

What the combo produces