Prerequisites
- Ashnod's Altar on the battlefield
- Gleaming Barrier on the battlefield
- Goblin Welder on the battlefield
- Idol of Endurance on the battlefield
- Thornbite Staff on the battlefield
- Thornbite Staff attached to Golbin Welder
- Goblin Welder does not have summoning sickness
Steps
- Sacrifice Gleaming Barrier to Ashnod's Altar, adding
and 
with the treasure token and putting a Thornbite Staff trigger onto the stack - Holding priority, tap Goblin Welder, sacrificing Idol of Endurance and returning Gleaming Barrier to the battlefield
- Allow the Thornbite Staff trigger to resolve, untapping Goblin Welder
- Tap Goblin Welder, sacrificing Gleaming Barrier and returning Idol of Endurance to the battlefield, triggering Thornbite Staff to untap Goblin Welder and adding through the treasure generated
- Idol of Endurance ETBs and exiles Gleaming Barrier from your graveyard
- Tap Idol of Endurance and spend
to allow yourself to cast Gleaming Barrier for free - Repeat for infinite colored and colorless mana
Results
- Infinite colored mana
- Infinite colorless mana
- Infinite death triggers
- Infinite ETB
- Infinite LTB
- Infinite sacrifice triggers
- Infinite untap of creatures
Required Cards 5
Gleaming Barrier
Artifact Creature — Wall
Goblin Welder
Creature — Goblin Artificer
Thornbite Staff
Tribal Artifact — Shaman Equipment
