Conversation so far:
What were Count Dracula's powers ?
Count Dracula can change form at will.
Did Count Dracula have any other powers besides being able to change form at will?
One of Count Dracula's powers is the ability to turn others into vampires by biting them.
Are being able to change form at will and the ability to turn others into vampires all the powers Count Dracula has?
Count Dracula requires no other sustenance but fresh human blood, which has the effect of rejuvenating him and allowing him to grow younger.

Question: What were Dracula's weaknesses ?
Self-contained rewrite: What were Count Dracula's weaknesses ?