There's plenty here to help energy generation - Flame Patch and Charmeleon - while cards like Copycat and May will help you search through your deck for the evolutions
A fat vanilla dork is rarely impressive in cube
The card advantage potential of a simple Harmonize going again is nasty
The question is, where does he fit
After sideboarding, its often the second, third, or fourth wave that overwhelms the opponent, and the Phyrexian spells sacrifice the speed and power of those waves to maximize the first, while the cantrips ensure that your backup arrives in a timely fashion
For three Energy Waterfall does 70 damage, while Draconic Disaster costs five, but can deal up to 200 damage in one hit if there is a Stadium card in play