Glowsquid potion

Using the inc sacs they can be turned into flash grenades, each phial cancels attacks at close range for 30 seconds when consumed, standard would be 10, and glowstone would make a greater flash, but reduce it to 5. Following that, an ender eye can shift it to be resistant to the effect and fermented spider eyes can craft the opposite, Aggrovation/Attraction. This can make villager escorting much easier and mobs more likely to follow you. It will be exceptionally perfect for pvp if mobs were around or you would like phantoms to attack for that good membrane. Either way I would gladly go hunt glow squid for that kind of power.