Sorin, Eternal Watcher

+1: Destroy a number of creatures who's combined mana cost are below or equal to the current number of counters on Sorin, Eternal Watcher.
-X: Put a +1/+1 counter on X number of target vampire creatures. You gain life for each vampire you control with a +1/+1 counter on it.
-8: Gain control of all black and/or white creatures, then destroy all non white or black creatures. You gain 1 life for each creature destroyed.