Nashor's is a must, I always get it. I also run a cooldown runes page, because chain Reckoning and frequent ulti is a huge asset.
I'd say stack ability power. It gives you a good nuke in Reckoning, and boosts your attack with Fury. Blessing is also quite good, the healing is not insignificant.
Typically, I'll go
Boots of Swiftness
This isn't a tank build though, obviously.
Edit: For tanking, I'd go Armor/Spell Defense over health, because that makes your Blessing that much better on yourself.