Den of the Bugbear can be either a great alternative to Faceless Haven, especially in Mono-Red decks, or an addition to Faceless Haven in any other deck that runs red color
Jeskai Black: It's really hard to cut this deck off Red-White-Blue unless you can hit Mystic Monastery with Crumble to Dust
For example, Echoes of Eternity is an Eldrazi (although not a creature) while on the battlefield and an Eldrazi card (although not a creature card) in zones other than the battlefield
So the total number of points is much less important than where cards rank in relation to one another since everybodys scale tended to be relative to how they ranked other cards
Spore Frog to fog every turn, Seal of Primordium to keep wiping out artifacts and enchantments, Pernicious Deed to keep board wiping, Plaguecrafter to keep them sacrificing creatures or Planeswalkers its strong stuff when it gets going
Each card is guaranteed to bring back memories of your childhood