Trueborn Slaver

Sadism, Gain control of target non-legendary
creature with power less than Trueborn Slaver
until end turn. Untap it. It gains haste
until end turn.
Discard a card: Target creature you control gets
+1/+0 until end turn.
The trueborn are those dark eldar who were lucky
enough to have not been vatgrown, and it shows.
Superior senses, greater agility, and of course, a more intense desire for anguish from their prey.