Feldon of the Third Path, Priest of Urabrask, Thornbite Staff, and Krark-Clan Ironworks

Prerequisites

• Feldon of the Third Path on the battlefield
• Priest of Urabrask in the graveyard
• Thornbite Staff on the battlefield
• Krark-Clan Ironworks on the battlefield
• Thornbite Staff attached to Feldon
• Feldon does not have summoning sickness
• available

Steps

1. Activate Feldon by paying and tapping it, creating a token copy of Priest of Urabrask that is an artifact in addition to its other types
2. When Priest of Urabrask enters the battlefield, it triggers, adding
3. Activate Krark-Clan Ironworks by sacrificing Priest of Urabrask, adding
4. When Priest of Urabrask dies, Feldon triggers, untapping Feldon
5. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite red mana
• Infinite sacrifice triggers