Blowfly Infestation + Carnifex Demon + Nest of Scarabs + Phyrexian Altar

Mana needed: {B}

B identity

Commander legal

The 4 combo pieces

What must be in place

Carnifex Demon has at least two -1/-1 counters on it.
At least two additional creatures on the battlefield.

How to execute it

  1. Acftivate Carnifex Demon by paying {B} and removing a -1/-1 counter from it, putting a -1/-1 counter on each other creature.
  2. Nest of Scarabs triggers for each counter placed this way, creating at least one 1/1 Insect creature token.
  3. If any creatures died as a result of the counters being placed, Blowfly Infestation also triggered once for each death, putting a -1/-1 counter on Carnifex Demon and all remaining counters onto any other creature(s).
  4. Activate Phyrexian Altar by sacrificing an Insect, adding {B}.
  5. Repeat.

What the combo produces