Energy Reserve that slowly depletes on its own

[Plane]

Originally Posted by ericbsmith

Draining (p. 132), drains ER instead of HP, -0%.

This disadvantage came originally from the GURPS Vampire: The Masquerade conversion book to represent the loss of Blood over the day's sleep. In GURPS 4e terms Blood Pool would just be an Energy Reserve with a Special Recharge.

I think you'd need some kind of rule here that if ER is empty it will then drain HP, otherwise we encounter problems like getting more points for taking Draining than you spend on the ER.

Though I could see pricing it as a temporary disadvantage on your ER which means it could never result in that.