At first I just wanted to see what the new R/W cards were like, and then I was reminded of battalion, which was also red and/or white in nature. Once I had that going and started looking around more, I was reminded of battle cry, which seemed a perfect supplement. Each battalion cards triggers when attacking with two or more other creatures, but battle cry boosts all others that are attacking. Throw in Márton Stromgald, and life gets really interesting. The costs hug the low end of the curve at 10/23/0/3/2/2, producing an average of only 2.25, and everything at the 4-, 5-, and 6-spots is worth the cost.