Before using the Death Army cards I wasn't very convinced about them. Now, I understand their great might.
Just like everyone does I use this card for the great strength it can easily reach. By simply resting two Death Army units it gets an extra 5k. Also it has a very cool Limit Break. With CB2 you can stand all your resting Nova Grappler units during your main phase and if you stand 4 or more cards by this ability it gets an extra critical. This way you can use the ability up to twice a turn and reach a power of 30k.
Strategies and game play:
Use a powerful Grade 3 like Asura Kaiser on the field. Wait until you get 4 damage and inflict your opponent the same amount. Ride this unit while you've swarmed the field with Death Army units. By making this unit reach a minimum of 30k and two critical your opponent will have a hard time to guard.
Combos with other cards:
Death Army Bishop: after using Lord's skills, use this card ability and stand two units so your opponent will have an even harder time guarding two attacks.
Death Army Knight: use Lord's skills, call this unit and stand two cards. the other part goes just like Bishop.
Ways to counteract it:
Against a unit with so much power the only way to counteract without getting a major hand/field loss would be a perfect guard. Having a big hand would also be useful.
It can easily reach devastating power.
It's first ability can be used as many times as you wish.
It's Limit Break can only be used once.
Without the right field it would be hard to make it reach it's full potential.
Never understood what variations are.
Artwork and aesthetics:
I like the artwork. It makes him look very powerful.