I always have trouble really getting to a 5-star infect deck. I leaned more toward first strike and the ability to give infect or direct poison counters, though I did later bring in creatures with infect (though only 9 of them of the 28 creatures). The dozen non-creature cards mostly enhance creatures or hurt opposing creatures, with a good number able to hand out poison counters. Interestingly, this deck can actually get a win on poison counters without ever dealing one in damage, which was part of the inital focus. The 15/15/8/0/2 curve is almost too cheap, averaging 1.98.