I still say it makes the most sense from the cards we've seen if void mana is like the mana produced by this card:
That is to say, it's (1) in most cases, but it can be used to pay snow costs, and you can't pay snow costs with a regular (1). It's just like any color of mana in that it can pay (1) and <> costs, but it does not actually have a color associated with it.
For those who are stuck on how difficult it would be to draft Waste cards, remember that Two-Headed Giant is being encouraged, and it's easier to get into a specific archetype that way. I also expect for there to only be a few cards that have <> in the casting cost, and for most cards that use it to need it for an activated ability. There will also probably be Scion variants that add <> to your mana pool.
I'm also expecting a card like this:
Kozilek's Distorter - 3R
Creature - Eldrazi Drone
Devoid
Nonbasic lands are Wastes (or however that would be worded).
3/3
Anyway, Uncharted Realms is back to the Battle for Zendikar story with
Hedron Alignment, and--oh god dammit, it's written by Kreines. That said, it wasn't terrible.
* Gideon plans out how to attack Ulamog when Jace returns.
* Jace explains his plan, but Kiora becomes angry, because she feels that she can defeat Ulamog on her own right now and they don't need to delay to set up a trap. Nissa also becomes angry that they intend to just trap Ulamog again, before Jace can explain that he has a plan to destroy it.
* Kiora leaves, but the others decide to go with Jace's plan.
* Nissa gets upset that Jace is using a scale model of the hedron ring made from magic to explain things instead of the actual thing. This is a very minor point, but seriously, Nissa? You really want him to drag people over to the actual hedrons every time he explains something?
* They lure Ulamog into the trap, but one of the hedrons gets out of alignment. Nissa allows Jace into her mind so that they can work together to figure out which one, and they fix it.
* The trap activates, and everyone celebrates, but then Ob Nixilis arrives in secret and kills a sentry.