Rod of Absorption | Echo Storm | Dreamstone Hedron

Cards

Activate
Dreamstone Hedron's first ability by tapping it, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) .
Cast
Echo Storm by paying ({3} magic symbol) ({U} magic symbol) ({U} magic symbol) , 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 ({C} magic symbol) .
Activate the original
Rod of Absorption by paying ({5} magic symbol) , 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.