Quote from Lion"s Eye Diamond »
Last but not least, someone pointed out that blood moon is sideboard, I agree
because burn is a decent portion of the meta, and they don't care about
blood moon, they'll just bolt you to death.
That is wrong.
In modern, Blood moon is only good in maindeck. It is not a card you can just put into your deck, you need to have quite specific manabase for it, and when you'll play against a good opponent, he'll notice your straight UR manabase, and will play around blood boon in game 2. Fun thing is, Blood moon is not a dead card against modern burn, because it's either 2- or 3-colored deck which plays no non-mountain basics.