Urza, Prince of Kroog + Reset + Liquimetal Coating + Archaeomancer

Urza, Prince of Kroog

Reset

Liquimetal Coating

Archaeomancer

How it works

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

This loop turns a simple wizard into an unstoppable artifact-duplication engine by leveraging Liquimetal Coating to make Archaeomancer legally targetable by Urza, Prince of Kroog's copy ability. Once your wizard is an artifact, Urza pays six mana to stamp out a fresh token copy, whose enter-the-battlefield trigger immediately claws Reset back from your graveyard to your hand. You then cast Reset to untap all your lands—fueled by the massive mana you just generated—and repeat the process, all protected by Reset's strict timing requirement that lets you pull this off right after an opponent's upkeep step.