Blood threads

The spell can't be used while in combat. The caster uses his blood to make a thin thread of blood. The thread length depends on the amount of blood used to use the spell. you lose 4hp for every 1 meter of thread. The thread can't be broken using physical strenght. The thread will be broken if the caster attacked or used another spell or if he choose to dispell it. The spell will also be broken if a target that the spell is restraning or holding got attacked, be it a creature or an object.