Konrad, Korvold´s Advicer

Flying
Whenever Konrad, Korvold's Advicer enters the battlefield or attacks, sacrifice another permanent.
Whenever you sacrifice a permanent, put a +1/+1 counter on Konrad and draw a card.
After Korvold transformed into a dragon, the responsible fairies got scared and made a deal with his Advicer Konrad.
.... Kill him and his power will be yours...