Urza, Prince of Kroog + Dockside Extortionist + Liquimetal Coating

Urza, Prince of Kroog
Dockside Extortionist
Liquimetal Coating

Requires
All permanents on the battlefield. Opponents control at least seven artifacts and/or enchantments. 6 available.
Steps
  1. Activate Liquimetal Coating by tapping it, causing Dockside Extortionist to become an artifact until end of turn
  2. Activate Urza by paying 6, creating a token copy of Dockside Extortionist that is a 1/1 Soldier in addition to its other types
  3. The Dockside Extortionist token enters the battlefield, creating at least seven Treasure tokens
  4. Activate six Treasure tokens by tapping and sacrificing them, adding 6
  5. Repeat from step 2
  6. Once you have infinite mana and Treasure tokens, you may use Urza to make infinite copies of any artifacts you control
Results
Infinite creature tokens. Infinite copies of artifacts you control. Infinite Treasure tokens. Infinite colored mana. Infinite ETB.