Wouldn’t it be better if lifestealer infested Necro (giving him huge health regen) and then Pudge eats Necro with LS in him boosting the hp regen even more?
We did that combo too, if the Necro has boots of bearing it's really effective and you get the move speed with that. But we found the eat Necro and LS infests pudge combo the most effective due to the extra move speed and hp