While red and black have tons of good cheap removal, Path to Exile is somewhat of an outlier for white, a color with versatile but often more expensive options
Changing to just snake is a bit odd
Over here at GosuGamers, we're excited to introduce you to a preview card from the upcoming set: From Father to Son (courtesy of Wizards of the Coast)
All three of my black choices happen to be four mana midrange bombs, so this has a lot of competition, but the sheer amount of stats on this thing scream playability to me
They are Vrondiss, Rage of Ancients (a Dragonborn Barbarian, leading the red/green Draconic Rage deck), Prosper, Tome-Bound (a Tiefling Warlock, helming the red/black Planar Portal deck), Sefris of the Hidden Ways (a Genasi Wizard, leading the White/Blue/Black Dungeons of Death deck), and, finally, Galea, Kindler of Hope (a Half-Elf Paladin, topping the White/Blue/Green Aura of Courage deck)
I think the only places you would see this getting used now is due to the cycling and as cyclers go this is one of the weaker ones