Best card gy hate card against Living End and in Living End imo. Leyline, Bojuka Bog, and Rest in Peace are all gravy but there are a few things that give this chick the edge.
1)Almost never a dead draw (It can always just be a wind drake)
2)Instant Speed gives you more flexibility to curve naturally and allows you to use it like a "counterspell"
3)No mana investment
4)You don't have to play 4 of them in your sideboard or aggressively mulligan for it to have an impact, though it certainly helps. (I'm looking at you leyline of the void)
5)You get a dude after living end resolves.