Altar of Dementia + Haunted One + Jan Jansen, Chaos Crafter + Retribution of the Ancients

RWB identity

Commander legal

The 4 combo pieces

What must be in place

Jan Jansen and the additional Gnome or Artificer do not have a +1/+1 counter on them.
You control at least one additional artifact creature.

How to execute it

  1. Activate Jan Jansen's first ability by tapping it and sacrificing another artifact creature you control except the Gnome or Artificer.
  2. Jan Jansen triggers, causing it and creatures you control that share a creature type with it to get +2/+0 and undying until end of turn.
  3. Resolve the Jan Jansen ability, creating two Treasure tokens.
  4. Activate Altar of Dementia by sacrificing Jan Jansen.
  5. When Jan Jansen dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Jan Jansen's power.
  7. Activate Jan Jansen's first ability by tapping it and sacrificing the Gnome or Artificer.
  8. When the Gnome or Artificer dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  9. Resolve the Jan Jansen ability, creating two Treasure tokens.
  10. Activate a Treasure by tapping and sacrificing it, adding {B}.
  11. Activate Retribution of the Ancients by paying {B} and removing the +1/+1 counter from Jan Jansen and the other Gnome or Artificer, giving a creature -2/-2 until end of turn.
  12. Repeat from step 4.

What the combo produces