Martyrdom is utterly useless right now though, and the ability is bugged...if multiple seekers hit a target at the same time, only one of them will do damage...
Furthermore, the autocast is set to only go off once the target suffers 50% hull damage...in most cases, the seeker will be destroyed before it can accelerate and collide with its target unless you are constantly clicking with them....
If the ability turns out to be too powerful after its fixed, you can always change the damage it does...but right now I'd at least like to see the ability in working order...