[Terazel Tenjin]

Should specifically state that you are testing it out so the GPs would stop *****ing left and right about you "abusing" your powers.

By true vampiric legends, they are only weaker in sunlight; they don't torch up and turn into dust when they touch sunlight. Driving a stake through their hearts only immobilizes them, not kill them outright.

Making bite nighttime only would be good, but it would also be sort of useless. So passive is good, and maybe they get less health during daytime and do less damage. Lure is another classic vampire trick, either that or feral claws or some sort of speed frenzy.