Hi we have people this is beautiful. I can now safely say we need no others! 8D

Gisk -- Ravnica alone of all the multiverse is restrictive, yes, but I also don't see how planeswalkers would reasonably stay in one plane long enough to form an organization dedicated to protecting it. Maybe everyone has different personal ties to it? If so then by all means let us play actual planeswalkers (who don't quite suspect Bolas yet). Let's have a vote, majority goes. 

whatever bright individual mentioned it -- yeah, every one of us should play a different color combinations. Very nice interaction that can go on. I think maybe the Promenade's theme, mana wise, should be at least three color combinations, up to maybe even five. To show impartiality. What do you guys think?

As for casting spells and so forth, this is what I have so far. Let us assume we are new planeswalkers who have been sojourning in Ravnica, though this is valid even if we are not planesalkers. 

Every creature we have encountered, spell we have learned and artifact we have uncovered is stored in our mind as knowledge. Casting a spell is fairly straightforward. When we wish to summon a creature, we pull it from the aether. If some of you are not familiar with how that works, we basically create a 3D illusion. It's an illusion yes, but it is still capable of ripping your head off. As for mana. What I was thinking is that any being with magic needs to be a) in an area with its mana present and b) the larger the spell, the more time and mana required to cast it. So a druid in a forest is going to be in his home turf, expect him to be able to drop a Worldspine Wurm with (relative) ease. Conversely an illusionist might have more difficulty in a forest. In a large city like Ravnica, there's going to be a flow of all colors at all the time, but this flow is, I reckon, not going to be too overwhelming for any individual color. This means any mage can cast spells at any time in Ravnica, but is going to have difficulty bringing big creatures out. 

The front page is updated and contains everything we've discussed so far. I'll be creating the ooc later this evening.