Barret, Avalanche Leader, Sword of the Meek, Queen Allenal of Ruadach, and Umbral Collar Zealot

Prerequisites

• Barret, Avalanche Leader on the battlefield
• Sword of the Meek in hand
• Queen Allenal of Ruadach on the battlefield
• Umbral Collar Zealot on the battlefield
• available

Steps

1. Cast Sword of the Meek by paying
2. When Sword of the Meek enters, Barret's first ability triggers
3. Holding priority, activate Umbral Collar Zealot by sacrificing Sword of the Meek
4. Resolve the Barret trigger, creating a 2/2 Rebel creature token and a 1/1 Soldier creature token due to Queen Allenal of Ruadach
5. When the Soldier enters, Sword of the Meek triggers, returning itself from your graveyard to the battlefield attached to the Soldier
6. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite creature tokens
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite surveil
• Infinitely large creature until end of turn