You can't really avoid enemies when farming. I'm supposed to kill 150 celestial enemies and avoid them at the same time? I know they are useful in 1.3, but once you have one in each place you need them an invo full can be a little irksome. Serious pocket fillers.No, there is not. It's really not a big deal, avoid enemies if you really want to. Banners are very useful since 1.3 anyways, they give bonuses against certain enemies.