Im not a believer in proliferate as a reasonable way to build around energy, so Im very skeptical even of the best proliferate cards, including Atraxa, Praetors' Voice, even though Atraxa seems to have been the most popular energy commander until recently
Its G-Max Juggernaut attack can hit for 160 base damage plus it can scale to 280 damage by attaching a few extra Metal Energy
Shock lands: No pain, no gain
Raging Bolt features a similar sort of hidden landscape devoid of other living creatures besides the mysterious Paradox Pokemon
White gets access to Banishing Light at common, which is an all-timer removal spell as far as Im concerned
Sorceress's Schemes is a red uncommon that pulls other instants or sorcery cards out of the graveyard or even exile, and - with the right helpers - creates an infinite loop that will ping your opponent to death