Basic lands you control can tap to produce at least ({5} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({U} magic symbol) .
Steps
Activate all basic lands you control by tapping them, adding at least ({5} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({U} magic symbol) .
Cast
Early Harvest by paying ({1} magic symbol) ({G} magic symbol) ({G} magic symbol) , untapping all basic lands you control.
Activate
Shigeki's channel ability by paying ({4} magic symbol) ({G} magic symbol) ({G} magic symbol) and discarding it, returning
Early Harvest and
Auroral Procession from your graveyard to your hand.
If basic lands you control can tap to produce at least ({6} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) ({U} magic symbol) , this combo nets infinite mana.
Results
Infinite storm count.
Infinite self-discard triggers.
Infinite magecraft triggers.
Infinite mana basic lands you control can produce.
Infinite untap of basic lands you control.
Return any number of nonlegendary cards from your graveyard to your hand.