Alchemist's Refuge + Dramatic Reversal + Rootha, Mercurial Artist

Mana needed: {G}{U}

GUR identity

Commander legal

The 3 combo pieces

What must be in place

Nonland permanents you control can tap to produce at least {3}{U}{R}.

How to execute it

  1. Activate all mana-producing nonland permanents you control by tapping them, adding at least {3}{U}{R}.
  2. Activate Alchemist's Refuge's second ability by paying {G}{U} and tapping it, allowing you to cast spells this turn as though they had flash.
  3. Cast Dramatic Reversal by paying {1}{U}.
  4. Activate Rootha by paying {2} and returning it to your hand, copying Dramatic Reversal.
  5. Resolve the Dramatic Reversal copy, untapping all nonland permanents you control.
  6. Activate all mana-producing nonland permanents you control by tapping them, adding at least {3}{U}{R}.
  7. Cast Rootha by paying {1}{U}{R}.
  8. Repeat from step 4.
  9. If nonland permanents you control can tap to produce at least {4}{U}{R}, this combo nets infinite mana.

What the combo produces