Echo Storm + Emry, Lurker of the Loch + Genesis Chamber + Phyrexian Altar

Mana needed: {U}

U identity

Commander legal

The 4 combo pieces

What must be in place

You control a number of artifacts equal to or greater than two plus Emry's commander tax.
You have enough mana to cast Echo Storm

How to execute it

  1. Cast Echo Storm by paying its mana cost, creating a token copy of Genesis Chamber.
  2. Cast Emry from the command zone by paying {U}.
  3. When Emry enters the battlefield, it and both Genesis Chambers trigger.
  4. Resolve the Emry trigger, causing you to mill four cards.
  5. Resolve both Genesis Chamber triggers, creating two 1/1 Myr artifact creature tokens.
  6. Activate Phyrexian Altar by sacrificing Emry, adding {U}.
  7. Choose to return Emry to the command zone from your graveyard.
  8. Repeat from step 2.

What the combo produces