I take Fel Concentration because I'm a farmer. Dark Pact because of its Mana Batteriness. And I can provide the 0/2 healthstone for peeps. Intensity over Improved Life Tap because I feel it isn't *that* great a need. In a raid environment I know that Imp. Life Tap will be more effectve but I take Intensity because of its general viability. Destructive Reach because of its threat reduction.