Darkstalker of the Nightwings

Indestructible, Hex-proof.
{t} Whenever Darkstalker of the Nightwings gets tapped, you may look at every players top card and may decide if they keep it or discard it.
Whenever a black card is played by any player, you may take control of that card and the card gets Haste and a +1/+1 counter on it. The creature(s) may attack.