Haunted One + Hyrax Tower Scout + Umbral Collar Zealot + Xavier Sal, Infested Captain

BGU identity

Commander legal

The 4 combo pieces

What must be in place

There is at least one counter on a permanent you control except Xavier Sal.
Xavier Sal does not have summoning sickness.
Hyrax Tower Scout has no more than one +1/+1 counter on it.

How to execute it

  1. Activate Xavier Sal's first ability by tapping it and removing a +1/+1 counter from Hyrax Tower Scout if it has one, or any counter from another permanent you control otherwise.
  2. Xavier Sal triggers, causing it and all other creatures you control that share a creature type with it to get +2/+0 and gain undying until end of turn.
  3. Resolve the Xavier Sal ability, causing you to populate.
  4. Activate Umbral Collar Zealot by sacrificing Hyrax Tower Scout.
  5. When Hyrax Tower Scout dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. When Hyrax Tower Scout enters the battlefield, it triggers, untapping Xavier Sal.
  7. Resolve the Umbral Collar Zealot ability, putting a +1/+1 counter on it.
  8. Repeat.

What the combo produces