When older sets leave the format, some staples dip in price, while evergreen collector cards keep more of their value
As such, if Vivi has the power for it, it's better to use Vivi's effect for mana rather than from lands or mana rocks to cast spells on your turn
Bria can even make your strongest creatures unblockable , since it triggers every noncreature spell cast and isn't once per turn
It wasnt quite as popular, due to the fact that the same card appeared in the set as an actual Enchanted, and it was only played in niche Amethyst/Emerald decks - and only one or two copies at that
These are all important questions to answer, but we probably won't know exactly how things will play out until Final Fantasy hits Arena
Your best, most economical option is to play Jumpstart mode