Activate five lands by tapping them, adding at least 5.
Activate Meloku five times by paying 5 and returning the five lands from the battlefield to your hand, creating five 1/1 Illusion creature tokens.
Activate Phyrexian Altar four times by sacrificing four Illusions, adding 2.
Cast Journey to the Oracle either from your hand or from the command zone by paying 2 and commander tax, if applicable.
Archmage Emeritus triggers, causing you to draw a card.
Resolve Journey to the Oracle, putting at least five lands from your hand onto the battlefield, then causing you to discard a card and Journey to the Oracle to your hand.