Here are some card ideas:
Wolfsbane Whelp (double-sided)
1/1. : Target werewolf creature gains infect until end of turn.
Morbid~If a creature died this turn, transform Wolfsbane Whelp.
2/2 deathtouch. :Target werewolf creature gains infect until end of turn.
Transform Savage She-wolf if a player cast two or more spells this turn.
All werewolves gain first strike and +1/+1 until end of turn