Chamber Sentry + Mortuary + Realmwalker

WUBRG identity

Commander legal

The 3 combo pieces

What must be in place

"Construct" chosen with Realmwalker.

How to execute it

  1. Cast Chamber Sentry either from your hand or from the top of your library by paying {0}.
  2. Chamber Sentry enters the battlefield and dies as a state-based action due to having zero toughness.
  3. Mortuary triggers, putting Chamber Sentry on top of your library from your graveyard.
  4. Repeat.

What the combo produces