Arvendal, Relentless Hunter

Whenever one or more nontoken creatures you control die, create a 2/2 green Wolf creature
token.
At the beginning of combat on your turn, you
may sacrifice a creature token. If you do, look at
the top four cards of your library. You may put a creature card from among them onto the battlefield and the rest on the bottom of your
library in a random order. That creature
gains haste and deathtouch until end of turn.