Dross Scorpion + Krark-Clan Ironworks + The Chain Veil + and 2 others

WU identity

Commander legal

The 5 combo pieces

• Dross Scorpion
• Krark-Clan Ironworks
• The Chain Veil
• The Mightstone and Weakstone
• Urza, Lord Protector

What must be in place

Urza, Lord Protector and The Mightstone and Weakstone melded into Urza, Planeswalker.

How to execute it

1. Activate Urza, Planeswalker's third loyalty ability by putting no loyalty counters on it, creating two 1/1 Soldier artifact creature tokens.
2. Activate Krark-Clan Ironworks twice by sacrificing the two Soldiers, adding {C}{C}{C}{C}.
3. The Soldiers die, triggering Dross Scorpion twice, untapping The Chain Veil and any other artifact you control.
4. Activate The Chain Veil by paying {4} and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn.
5. Repeat.

What the combo produces

• Infinite activations of most planeswalkers
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite mana artifacts you control can produce
• Infinite sacrifice triggers
• Infinite untap of artifacts you control