Warpshard
Empress of Light
But you won't have hundreds of banners in your inventory at any given moment. You'll probably only have a couple at a time, which, like I said, can be trashed. And if you want, then throw them in lava or just on the ground.Yeah I guess some people don't mind opening up their inventory every 20 seconds to shift click or to take time to find a place-able block. it may sound stupid but when you're talking about hundreds of flags it adds up.