John Wick, Avenger of Hounds

Unshackled - (This creature gets a +1/+1 counter for
each time this creature is cast from the command zone.)
Whenever another creature you control dies, put
a +1/+1 counter on John Wick, Avenger of
Hounds. Whenever one or more +1/+1 counters
are placed on this creature, you may search your
library or graveyard for a hound card and put it
into your hand.
Other hounds you control have +1/+1 and deathtouch.