Phyrexian Altar + Sneak Attack + Twilight Shepherd

RW identity

Commander legal

The 3 combo pieces

How to execute it

  1. Sacrifice Twilight Shepherd to Phyrexian Altar to add {R}.
  2. Twilight Shepherd's persist triggers, returning it to the battlefield with a -1/-1 counter.
  3. Sacrifice Twilight Shepherd to Phyrexian Altar to add {1}.
  4. Twilight Shepherd triggers, returning it from your graveyard to your hand.
  5. Pay {R} to Sneak Attack to put Twilight Shepherd onto the battlefield from your hand.
  6. Repeat.

What the combo produces