Answer:
Steals an event or even a mood. Reveals the truth or shatters it.
What starts with a 'T', ends with a 'T', and has T in it?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.
My first keeps time, my second spends time, my whole tells time.
I drive men mad for love of me. Easily beaten, never free.
Special abilities and brightly colored underwear are all you need to be one of these.