Rod of Absorption + Echo Storm + Dreamstone Hedron Combo

Echo Storm in hand.

Rod of Absorption and Dreamstone Hedron on the battlefield.

You've cast your commander from the command zone at least twice.

available

Activate Dreamstone Hedron's first ability by tapping it, adding .

Cast Echo Storm by paying , targeting Rod of Absorption.

Echo Storm triggers, copying itself for each time you've cast your commander from the command zone this game, with each copy targeting Dreamstone Hedron.

Resolve all copies of Echo Storm, creating that many token copies of Dreamstone Hedron.

Resolve the original Echo Storm, creating a token copy of Rod of Absorption and exiling Echo Storm due to Rod of Absorption.

Activate two Dreamstone Hedron tokens' first abilities by tapping them, adding six .

Activate the original Rod of Absorption by paying , tapping and sacrificing it, causing you to cast Echo Storm from exile without paying its mana cost, targeting the Rod of Absorption token.

Repeat from step 3.

Once you have infinite mana, you may target any other artifact you control using Echo Storm, or sacrifice the Dreamstone Hedron tokens to draw infinite cards.

Infinite card draw

Infinite colorless mana

Infinite copies of artifacts you control

Infinite draw triggers

Infinite magecraft triggers

Infinite storm count