erestor wrote:well it could be like MTG were you have a card that is a multi colour
and you use on manna of one colour and 'x' of the other
or it could be that you add the two together like two from column 'a' and one from column 'b'
or what ever sphere you use determines wheather you attack or use an 'instant' [ i forgot the name of the not field cards]
That was actually where my train of thought originated from. In Magic: the Gathering, you have gold cards, which require specific amounts of more than one type of mana, split cards, which have two separate abilities based on which cost/color you pay, and the newer dual cards, which you use any combination of two colors (3 red 0 blue, or 2 red 1 blue, etc) to play.
I expect the Alteil multi-faction cards will be closest to the gold cards, in that they'll simply have a level and two factions, and you need that level in both factions, but we'll see.