After next restart, two new Necromancy spells have been added:

• Ghost Blade (6th circle) - increases your effective Tactics melee damage bonus, scaled up based on your Spirit Speak skill.
• Vampiric Touch (7th circle) - a chance to siphon some health from your enemy on a melee hit if the hit is successful. Its effectiveness is scaled up based upon your Spirit Speak skill.

Bone Armor (existing spell), Ghost Blade, and Vampiric Touch are exclusive- only one of these may be active at a time.

https://wiki.shardsofbritannia.com/en/necronomicon