Elvish Piper + Great Oak Guardian + Vedalken Mastermind

GU identity

Commander legal

The 3 combo pieces

What must be in place

Creatures you control can tap to produce at least {G}{U}.
Vedalkan Mastermind and Elvish Piper do not have summoning sickness.

How to execute it

  1. Activate all mana-producing creatures you control by tapping them, adding at least {G}{U}.
  2. Activate Elvish Piper by paying {G} and tapping it, putting Great Oak Guardian from your hand onto the battlefield.
  3. Great Oak Guardian enters the battlefield, untapping all creatures you control and giving them +2/+2 until end of turn.
  4. Activate Vedalken Mastermind by paying {U} and tapping it, returning Great Oak Guardian from the battlefield to your hand.
  5. Repeat.
  6. If you can produce at least one additional mana in step 1, this combo produces infinite mana.

What the combo produces