The boot gives mediocre advice in exchange for tequila and live mice.
They will tell you their venom is the strongest in all possible worlds. They will entice you to painstakingly milk their throbbing mouth glands.
Really though, you'd just be tickling a demonic prostate.
The twin snakes wizard boots want nothing to do with those who have milked them. You will find then only dark looks and hissing laughter.
Even for demons, they are grossly base cretins.