The Prydwen, Steel Flagship, Queen Allenal of Ruadach, Sword of the Meek, and Arcbound Ravager

Prerequisites

• The Prydwen, Steel Flagship on the battlefield
• Queen Allenal of Ruadach on the battlefield
• Sword of the Meek in hand
• Arcbound Ravager on the battlefield
• available

Steps

1. Cast Sword of the Meek by paying
2. When Sword of the Meek enters the battlefield, The Prydwen triggers
3. Holding priority, activate Arcbound Ravager by sacrificing Sword of the Meek
4. Resolve the Prydwen trigger, creating a 2/2 Human Knight and a 1/1 Soldier creature token
5. When the Soldier enters the battlefield, Sword of the Meek triggers, returning Sword of the Meek from your graveyard to the battlefield attached to the Soldier
6. Repeat from step 2

Results

• Infinite ETB
• Infinite creature tokens
• Infinite +1/+1 counters on Arcbound Ravager