War Room is a great addition to any mono-color (or colorless) Commander deck, since it allows you to pay three mana and one life to draw a card , plus it produces colorless mana without coming into play tapped
Protect your monsters and life points with an arsenal of defensive spells and traps, such as Gravity Bind, Level Limit - Area B, and Threatening Roar
If I was asked what qualities which define the current era of Magic: The Gathering , theres a few answers I could give
It also works great in multiples and I think has a number of applications for control and midrange-based decks
It looks really cool and is holding up very well in value at about $33 right now
As noted earlier, you generally want more cheap costs and fewer expensive costs, because over time, you're more likely to find your high-cost cards