Smoker

Constrict (At the beginning of your combat phase you may {t}'Smoker', if you do, tap target survivor and it gets -0/-1 every upkeep you control 'Smoker', Both creatures don't untap during their controller's untap step as long as both creatures are in play. If 'Smoker was {t}: untap it only during opponents combat phase, it must block if possible.)
When 'Smoker' dies, all survivors get -2/-0 until your next end step.