Urza, Lord Protector + The Mightstone and Weakstone + The Chain Veil + Dross Scorpion + Ashnod's Altar

Prerequisites

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

Steps

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

Effects

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