Vizier of Tumbling Sands + Isochron Scepter + Vitalize

Vizier of Tumbling Sands
Isochron Scepter
Vitalize

Requires
Vitalize exiled by Isochron Scepter. All other permanents on the battlefield. You control creatures that can produce at least 3. Vizier of Tumbling Sands does not have summoning sickness.
Steps
  1. Activate creatures by tapping them, adding at least 3
  2. Activate Isochron Scepter by paying 2 and tapping it, casting a copy of Vitalize
  3. Resolve the copy of Vitalize, untapping all creatures you control
  4. Activate Vizier of Tumbling Sands by tapping it, untapping Isochron Scepter
  5. Repeat
Results
Infinite mana creatures you control can produce. Infinite untap of creatures. Infinite magecraft triggers.