I play RG
breach which has a real bad matchup against infect the only times I've won were because of
blood moon or chalice, and i'm not going to mulligan a search for tommorow,
farseek,
breach, emrakul hand just to get one of those pieces. Your point is exactly why I want to beat infect, yes melira is a silver bullet but the deck does have bad match ups and multiple win cons like RG
breach which I like.
My store's meta is Utron, infect, Grixis, and affinity. So I have no idea what does well against all those.