Tawnos, Urza's Apprentice
Sands of Time

   Prerequisites

What do I need to start this combo?
Tawnos and Sands of Time on the battlefield.
All other permanents must be able to produce at least 1. Tawnos does not have summoning sickness.

   Steps

How does this combo work?
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.

   Results

What do I get from this combo?
Infinite Mana during the upkeep step
Infinite untap of creatures you control
Infinite mana artifacts you control can produce during the upkeep step
Infinite mana creatures you control can produce during the upkeep step
Infinite mana creatures you control can produce
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