Sword of the Meek, Krark-Clan Ironworks, and On Wings of Gold

Prerequisites

• Sword of the Meek in the graveyard
• Krark-Clan Ironworks on the battlefield
• On Wings of Gold on the battlefield

Steps

1. Cause a 2/2 creature to enter the battlefield under your control, which enters as a 1/1
2. Sword of the Meek triggers, returning itself from your graveyard to the battlefield attached to the 1/1 creature
3. On Wings of Gold triggers
4. Holding priority, activate Krark-Clan Ironworks by sacrificing Sword of the Meek
5. Resolve the On Wings of Gold trigger, creating a 2/2 Zombie creature token
6. Repeat from step 2

Results

• Infinite ETB
• Infinite colorless mana
• Infinite creature tokens