Mortuary + The Reality Chip + Walking Ballista

UB identity

Commander legal

The 3 combo pieces

What must be in place

The Reality Chip attached to any creature you control.

How to execute it

  1. Cast Walking Ballista by paying {0}.
  2. Walking Ballista dies as a state-based action due to having zero toughness.
  3. Mortuary triggers, putting Walking Ballista on top of your library from your graveyard.
  4. Cast Walking Ballista from the top of your library by paying {0}.
  5. Repeat from step 2.

What the combo produces