Monday, 3rd October 2016, 23:17 by duvessa
the corrosion is insignificant because in any practical situation, it should not change your actions. let's say you sacced a hand and you're being bad and fighting two monsters in melee at once, an ice fiend and [your favourite monster here]. when you kill the ice fiend, if you switch from your ring of protection from cold to your +8 ring of slaying before killing the other monster, you are either grievously misinformed or just stupid. the time it takes to perform the ring switch means you lost at least 1 attack; your subsequent attacks will do more damage, but you will still kill the monster slower overall because you wasted time switching rings.
the same situation happens with corrosion. if you choose to use a lower-damage attack that applies corrosion, instead of a higher-damage attack that doesn't, it is overwhelmingly likely that you are being stupid for the same reason; you took away a bunch of your damage in your quest to do more damage.
if the corrosion attack is your most damaging one, then the corrosion is still insignificant, because you'd be using the corrosion attack anyway because it's your most damaging one; this is why wand of acid is still useful. the corrosion adds some damage to your 2nd and subsequent attacks, yes, but the potential of this to actually change the outcome of a fight is pretty much nonexistent. this is also true for +8 slaying or +8 ac or whatever unless you find it extremely early in the game; you will find vanishingly few cases where you actually would have won with slaying and "lost" in any fashion without it, and the situation is considerably worse with corrosion because it doesn't help your first attack. (if you do find corrosion extremely early in the game, then NOTHING has 8 ac unless it found a plate armour on the ground or something, so it's not like +8 slaying even on the 2nd and subsequent attacks)
sure, it's possible for the corrosion to make a difference in whether you should zap a wand of acid or not, use Punk or not, enslave a jelly or not, whatever. but such a situation is so unlikely to occur in practice that it's safe to dismiss. i know exactly what corrosion does, i have zapped wand of acid plenty of times, but i have never, ever zapped it for the corrosion, only for the immediate damage.
i never said monster corrosion literally does nothing, or that 8 slaying doesn't matter