think of the blobs like Anivia's egg ....if the egg gets killed then Anivai is dead -- same for Zac, either they can step on them or shoot the bloobs so he doesn't revive -- just like Anivia. The strategy is to put yourself somewhere where the enemy can't get to your blobs without taking some critical blows say from your turret or your team -- where your team can protect your blobs. It's all about smart strategy and positioning. Just like the entire game -- smart team play, good strategy, positioning and great counter builds is what wins games. And sadly strategies necessary to win games is not how the majority of players in PBE or normal Q play at all because most people Run and Gun like it's an FPS game.