Mortal reminder and Bramble Vest are unhealthy in how they passively apply grievous wounds.
There is no skill depth to them.
They are effectively like old rylai's crystal scepter in how powerful their passives are.
Make them have a window of power with the grievous wounds being on an active.
is especially stupid as its a 800g cost item that is a huge middle finger to anyone relying on any kind of healing, but i wouldn't mind that if it's GW application wasn't so stupidly easy and universal...