This elegant loop transforms the graveyard into an endless engine, fueled entirely by the cost-reduction power of Rooftop Storm. Because Ebondeath, Dracolich can be cast directly from your graveyard whenever another creature dies, you can repeatedly deploy it for free. Each time you do, you immediately feed it to Phyrexian Altar, generating a color of mana while sending the Dracolich right back to the graveyard to satisfy its own casting condition.