Deployment should take opponent and terrain in consideration.
It is very hard to decide that on advance.
But here are a valid option with army something like this.
Mainly to get better value of RoH, Lord ld and BsB use them central.
Lord
-HeavyArmour of ES
- rest of Mundane amour
- Cold One
- RoH
- Caledors Bane
Master BSB
-Lance
- Cold One
- Heavy Armour
- Shield
- Sea Dragon Cloak
- Hydra Banner
Sorceror Lv1
-2 dispell scrolls (You might want to take away sorceror and get more models instead)
Assassin (With BG)
- Add. Handweapon
- Rune of Khaine
- Manbane
Assassin (With Warriors)
- Add. Handweapon
- Rune of Khaine
- Manbane
5 Dark Riders
10 Crossbowmen
10 Crossbowmen
20 Warriors FC +Warbanner
5 Shades
5 Cold One Knights FC
5 Cold One Knights FC
20 Black Guard FC + Standard of Hag Graef
2 Hydras
Deployment
Hydra BG+A Knights+L BsB+Knights Warrior+A Hydra
Sorceror and both units of crossbowmen as central as possible behind the Knights moving 5" after knights first turns, they should then have a good place to be able to shoot at oppoents and protection from RoH, move them when neccessary.
Dont cast spells with sorceror untill out of RoH sphere.
Shades in good scout place
Dark Riders start in cover if possible or behind other troops since they fragile
and then fast move with 18" to threat asap warmachines or mislead or block.
Always position characters toward center of field to maximize their sphere of influence.
Regardless of deployment what is vital is to attack in support when needed.
Use Hydras breath to soften up enemies when needed especially with assassins and BG since they have ASF.
Try get Hydras in Flank of enemies while breathing then if you got opportunity charge them from 2 sides.
Against good oppoents that wont work then charge with 2 of your units in support at one of his to crush them.
Easier said than done however against good opponents but training gives experience.
Have patience during test battles, try to see whats good and whats not.
Good luck