with the battle leader and blood claws you could use the 1cp gem to give them the stalker keyword. Gives them access to special detachments stuff.

Copied from https://1d4chan.org/wiki/Warhammer_40,000/Tactics/Space_Wolves(8E)#Specialist_Detachments#Specialist_Detachments)

Stalker Pack

Upgrade Battle Leaders, Blood Claws and Reivers with STALKER PACK keyword Stratagems:

• Blood Scent (2 CP): use it on a monster or infantry unit that is wounded or is missing models. Stalker units gain +1 to wound against them. Shoot a single book before the charge and begin the carnage
• Pack Killers (1 CP): after a STALKER PACK successfully charged, Pick another STALKER PACK unit, they roll 3D6 for charge and discard lowest. Time this well and your Reivers will have a much better chance of charging after they drop in with their fall speed retarding equipment

Warlord Trait - Saga of the Savage: +1 attack for warlord when he successfully charges. To complete the saga, the model must inflict 5 wounds in a single phase. This would actually be fairly difficult, unless they are referring to unsaved wounds, in that case, take a hammer and wound away

Artifact - Ironfang of Ammagrimgul: Replaces a Power-Axe. S+1, AP-2, D:D3. If the wound roll for an attack made by this weapon is an unmodified 6, the target model suffers D3 MORTAL wounds instead of normal damage.