Patrol Signaler, Cryptolith Rite, and Concordant Crossroads

Prerequisites

• Patrol Signaler on the battlefield
• Cryptolith Rite on the battlefield
• Concordant Crossroads on the battlefield
• You control at least one additional creature

Steps

1. Activate Patrol Signaler and another creature you control by tapping them, adding
2. Activate Patrol Signaler by paying and untapping it, creating a 1/1 Kithkin Soldier creature token
3. Repeat

Results

• Infinite ETB
• Infinite tapped creature tokens