[quote=@Gisk]
I love the idea, it's something I've meant to implement.  

Will we have a mana system or some other way of controlling when we can do spells of varying power?

Also, here's the basic premise of the character:

Human from Ravnica.  Grew up in a Gruul clan, but converted later in life to Boros(picking up his third color).  He's wild, but with a sense of justice and an instinct to protect.  He is distanced from the Gruul by his willingness to protect the weak, but also from the Boros by his distaste for strict discipline.  I have not yet decided how his spark ignites.
[/quote]

I'll basically leave mana at player discretion, or maybe do a D&D 4E sort of thing, where you have unlimited cast spells, once per encounter spells, and once per day spells.

Character sounds good. Perhaps his spark ignited as part of a revenge attack by the Gruul, or something along those lines?

[quote=@Enalais]
I think i might just make a black undead kinda guy :P Grixis for the win!
[/quote]

As long as you're aware that the undead cannot actually be Planeswalkers. The conditions for being born with and keeping a spark require one to have been born, be alive, have a soul, and be sapient.