Tazri, Stalwart Survivor, Patrol Signaler, and Agatha of the Vile Cauldron

Prerequisites

• Tazri, Stalwart Survivor on the battlefield
• Patrol Signaler on the battlefield
• Agatha of the Vile Cauldron on the battlefield
• Patrol Signaler does not have summoning sickness
• Agatha of the Vile Cauldron has power 1 or greater

Steps

1. Activate Patrol Signaler by tapping it, adding that can only be spent to activate abilities
2. Activate Patrol Signaler by paying and untapping it, creating a 1/1 Kithkin Soldier creature token
3. Repeat

Results

• Infinite creature tokens
• Infinite ETB