John Wick, The Baba Yaga

Avenge ( whenever a Hound you control dies, John
Wick gets +1/+0, Vigilance, Deathtouch and
Indestructible )
Whenever John Wick, Avenger of Hounds enters
the Battlefield, create a Black 1/1 Hound creature
Token.
As long as John Wick, Avenger of Hounds is
on the Battlefield, you cannot play spells or
use Permanents that allow Permanents you
control to be Sacrificed.