The last singleton creature, Voldaren Pariah, is an incredibly powerful effect that synergizes with our token makers, which makes its value as a singleton quite high
For that reason, I have also given greater consideration to cards that may be easier to utilize within Unstable draft archetypes
The year is 2015
It allows players to get three mana of any color when they sac it and is crucial to a first turn Channel-Fireball kill in a Red/Green deck
That said, I don't think there's such a thing as a perfect system, and while it was still early days when it was described by the designers earlier in the month, I'm not sure the one Wizards of the Coast is devising will work
The Final Fantasy 14 (XIV) deck is white, blue, and black and called Scions & Spellcraft and is headed up by Yshtola, Nights Blessed, and looks to be a deck about losing life and casting big noncreature spells