Urza, Prince of Kroog, Reset, Liquimetal Coating, and Mnemonic Wall

Prerequisites

• Urza, Prince of Kroog on the battlefield
• Reset in hand
• Liquimetal Coating on the battlefield
• Mnemonic Wall on the battlefield
• It is an opponent's turn
• Lands you control can tap to produce at least

Steps

1. During an opponent's turn, after their upkeep step, activate Liquimetal Coating by tapping it, causing Mnemonic Wall to become an artifact until end of turn
2. Activate all mana-producing lands you control by tapping them, adding at least
3. Cast Reset by paying , untapping all lands you control
4. Activate Urza by paying , creating a token copy of Mnemonic Wall that is a 1/1 Soldier in addition to its other types
5. When the Mnemonic Wall token enters the battlefield, it triggers, returning Reset to your hand from your graveyard
6. Repeat from step 2
7. If lands you control can tap to proudce at least , this combo nets infinite mana, which can be used to activate Urza's ability infinitely and/or cast Reset choosing its other modes

Results

• Infinite creature copies of artifacts you control
• Infinite creature tokens
• Infinite ETB
• Infinite magecraft triggers
• Infinite mana permanents you control can produce
• Infinite storm count
• Infinite untap of permanents you control