Black blood Chains

Thick black liquid chains rise from the floor around two targets grappling them. Every round when they make an action ( including trying to break free) they will take 1d6 necrotic damage as there veins turn black. If they stay within these chains for more then 5 rounds then they will become paralysed until combat it over. They can only break free if the targets role equal to or above your role to hit.

These chains cannot be damaged by weapons ( weapons move through the chains) they can only be damage by spells or by contact ( skin contact) which invokes the same damage penalty 1d6 every two time you hit a chain. 

Chain HP= 12 

+ 5 HP every spell slot above 2nd

grapple one extra person every spell slot above 2nd