Packsong Pup 
Creature — Wolf
At the beginning of combat on your turn, if you control another Wolf or Werewolf, put a +1/+1 counter on this creature. When this creature dies, you gain life equal to its power.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL