I finally defeated the Ender Dragon, and went looking for End Cities. I found one, and entered the building at the bottom of the city. There were two shulkers at the bottom and I destroyed them, and traveled upwards and there was at least 3 shulkers all shooting at me. I used my shield but it's nearly impossible to avoid those stupid things they shoot, half the time they hit me from behind. I ended up floating to the top of the building and was trying to land on a balcony, but when I got there I was hit by another shulker shot and died. I really need to get that stuff back.
What's the best way to deal with a building full of shulkers? I need to kill them and get my stuff. Keep in mind, I haven't found Nether Wart yet.