Turok, Son of Stone

Deathtouch, reach
At the beginning of your upkeep, if your
opponents control no permanents with a prey counters on them,
put a prey counter on target permanent or Planeswalker an opponent control.
Whenever a permanent or Planeswalker on
opponent controls with a prey counter on it dies,
you gain 3 life and draw card.
"From blood, follows blood" - Turok, Son of Stone