Potion of Confusion

confusion gas

This unstable chemical will quickly vaporize into a glittering cloud upon contact with open air, causing any creature that inhales it to lose control of the direction of its movements until the effect wears off (although its ability to aim projectile attacks will not be affected). Its vertiginous intoxication can cause creatures and adventurers to careen into one another or into chasms or lava pits, so extreme care should be taken when under its effect. Its contents can be weaponized by throwing the flask at distant enemies.

The rainbow-colored gas tickles your brain.

Anyone caught in the gas will become confused.

Potion of confusion is an extremely efficient grenade against groups of enemies, even more efficient than potion of poisonous gas. And more rare.