Now I'm confused - you can always take one hit, or rather, administer the whoopaz by prepping a dodge potion (the yellow one). And if whoopaz takes away the, err, post-zot-overheal and then applies the effect to the reduced max hp, then you can, without batting an eyelash take a boss down to... 1/3 of his HP with no effort?
My, that is fairly broken. Lol, I say.
Does Zot work only on same level monsters or subdungeon monsters too? I'm asking because if it's the latter, then it's going to wreck sh*t up in vicious, too.
Otherwise it means everything is poisoned down to half-hp, and I've never really found the effect that good (must've used Zot once or twice in my whole career - but take that with a pinch of salt since it's rare and I don't rotate my locker slots a lot). If it is that good, just bumping the prep cost would do the trick, or rather the relockering cost, and if it isn't, well, it's a nice alternative strat, especially once they bump the prep cost. I hope they do.
And whoopaz - zot is really just gamebreakingly daft. Especially if you can scum up Zot via the Tinker challenge.