There isn't really much to say about Khazad, Khazad, but I suppose that's what I'm here to do. Anytime you can't put down a pesky troll (no, not an internet troll), play this and Gimli, smash! Durin's Song achieves much of the same, but hey, spheres are the spice of life and Tactics is pure red pepper flakes. I've had good fun using this to help Battle quest.

Khazâd! Khazâd! is effective in stabilizing your board state in the opening rounds. It's precisely at this time that the dwarf archetype is most vulnerable since many of its heroes only have 1 or 2 attack and you will not have many allies on the table. Khazâd! Khazâd! can help you defeat those low to mid range enemies that tend to engage you early. It's utility tends to decrease towards the endgame because by that time you have established the dwarf army. Overall a great card and a staple in most dwarf decks.