High King of the Vampires

+2: All Vampires under your control get +1/+1 until the end of the turn. You get two lifepoints.
-4: Create two black 3/2 "Vampire Knight" tokens with lifelink under your control. All Vampires under your control get "lifelink" until turn's end.
-13: Transform this card to "Ta'zal, Blood Demon of Madness". Create a black and green 2/5 "Broken Vampire" token with hexproof and lifelink.