I have a feeling that Nicol Bolas would either be remade into a god or be changed into a 5-color planeswalker. This is because...

• Nicol Bolas already started out as a 3-color planeswalker, using blue, black, and red mana.
• Nicol Bolas has shown to be able to wield 5 colors of mana, so this kind of ability isn't impossible for him.
• Nicol Bolas now has control over all aspects of an entire plane, using, regarding what is most pervasive, white mana for this achievement.
• Green mana would be extremely useful as a tool for controlling such a diverse mana base.

I think that a 5-color Nicol Bolas could be a nice possibility to look forward to. Too bad I'm too poor for this game now.

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