Dagger/Warhorn:

Necrotic Slash: Fairly high damage if you can close to melee range safely. It also builds up life force (which you can use to detect stealthed enemies).

Life Siphon: This skill is good to cast when closing to melee range after swapping to the weapon set or when backing off with weapon swap still on cooldown.

Dark Pact: This skill is great to hold an enemy in place for your minions to tear apart.

Wail of Doom: Really simple, unblockable daze. Great against spirit rangers, since you don't even have to target the spirit. Just look at it and cast.

Locust Swarm: Good for mobility, but completely overpowered when fighting on point. They can't get away from your minions while crippled.

Axe/Dagger:

Rending Claws: Good auto attack with vulnerability to increase damage and as a cover condition.

Ghastly Claws: High damage skill that also builds up life force.

Unholy Feast: If you're fighting a spirit ranger, this will give you permanent retaliation. It also strips boons and cripples for your minions.

Deathly Swarm: Great when fighting condition classes. This is what makes sure you win against necromancers, engineers, and spirit rangers.

Enfeebling Blood: Great when fighting power builds. Weakness too stronk.

Utilities:

Consume Conditions: I would never run anything other than Consume Conditions, since without it you'll lose to most condition classes.

Haunt: You can use this skill to blind while you stomp.

Putrid Explosion: This skill does insane damage when combined with Death Nova. It's great downed body cleave because of the poison.

Rigor Mortis: Use this after Dark Pact to chain immobilizes, then you can explode your bone minions on them.

Charge: This can be used on downed bodies to knock them off the res, but my favorite use is if they're against the wall. It does like 10k damage.

Death Shroud:

Life Blast: This skill does more damage if you're within 600 range. You don't have to get to melee. Just stay in range of what your axe would hit.

Dark Path: Use this to chase targets, or to close then swap to dagger/warhorn.

Doom: Fear me!

Life Transfer: Good for tanking when fighting multiple foes,

Tainted Shackles: Torment is strong even without condition damage, but the immobilize is what makes this skill strong. Chain that shit.