Sands of Time + Tawnos, Urza's Apprentice

UR identity

Commander legal

The 2 combo pieces

• Sands of Time
• Tawnos, Urza's Apprentice

What must be in place

All other permanents must be able to produce at least {1}{U}{R}.
Tawnos does not have summoning sickness.

How to execute it

1. At the beginning of the upkeep step, Sands of Time triggers.
2. In response, tap all of your mana producing permanents.
3. Activate Tawnos, copying the Sands of Time trigger.
4. Let the copy resolve, untapping all your creatures, lands, and artifacts.
5. Repeat from step 2.

What the combo produces

• Infinite mana artifacts you control can produce during the upkeep step
• Infinite mana creatures you control can produce
• Infinite mana creatures you control can produce during the upkeep step
• Infinite Mana during the upkeep step
• Infinite untap of creatures you control