2 / 4
: If Lesser Werewolf's power is 1 or more, it gets -1/-0 until end of turn and put a -0/-1 counter on target creature blocking or blocked by Lesser Werewolf. Activate only during the declare blockers step.
You may activate Lesser Werewolf’s ability no matter what its power is. However, if Lesser Werewolf’s power is 0 or less at the time the ability resolves, the ability won’t do anything.