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Fizzling with a 100% Blade or Shield

AuthorMessage
Explorer
Sep 26, 2013
61
I don't understand how I can fizzle when I have a -50% accuracy charm on me as I launch a 100% blade or shield. Would someone explain the math to me please?

Archon
Sep 17, 2012
4120
SImple. 100% minus 50% equals 100/2 = 50%, meaning you will fizzle about half the time. If it's an 80% spell it becomes 40%, meaning you'll fissle 60% of the time. Did you really need that explained?

Hero
Sep 19, 2013
770
100%-50%=50%. It's pretty obvious; you have a 50% chance to fizzle.

Delver
Jul 04, 2010
254
because that 100% is now down to 50%. it takes it from the spell itself so you don't no weather or not it will cast or fizzle

Survivor
Apr 07, 2010
15
Defender
Jun 06, 2009
145
um its not a 100% chance any more its only 50% chance so half is fizzle half is not

Archon
Oct 24, 2010
4942
Logan Silversword on Jun 20, 2014 wrote:
I don't understand how I can fizzle when I have a -50% accuracy charm on me as I launch a 100% blade or shield. Would someone explain the math to me please?
It's simple math: 100-50 equals a 50% chance of casting or fizzling. It's not that complicated.

Explorer
Sep 26, 2013
61
Thank you. I was thinking that a 100% spell was immune to any deduction. Thank you to those who posted the explanation nicely.

Defender
Jun 06, 2009
102
Logan Silversword on Jun 21, 2014 wrote:
Thank you. I was thinking that a 100% spell was immune to any deduction. Thank you to those who posted the explanation nicely.
A quick clarification -- which only matters under certain circumstances like battling Luska in Water Works -- but to make sure there is no misunderstanding:

Like blades, accuracy boosts and debuffs work as multipliers and dividers, not adders and subtractors.

For example, casting a 100% spell with no native boost to accuracy.
Add +20% Accurate TC.
Add +20% Infallible Aura TC.
Add +15% Guidance TC.
Add -50% Ink from Luska.

The answer is NOT 100+20+20+15-50=105%. If you think this way, you will be surprised when you do occasionally fizzle. I certainly was. I even filed a bug report. KI politely thanked me for submitting the report. :-) It was the first time I ever encountered not getting a real response from them on a bug submission.

In retrospect, they must have been laughing all the way to the "Closed -- behaving as expected" button.

The answer IS found thus:

100 + 20% (.20x100) = 120
120 + 20% (.20x120) = 144
144 + 15% (.15x144) = 165.6 Rounds DOWN to 165
165 - 50% (.50x165) = 82.5 Rounds DOWN to 82.

You have an 18% chance to Fizzle in the above circumstance.

And even the above math is not deadly accurate, as someone has done a fine analysis and shown that W101 doesn't use decimal mathematics when it comes to buffs and debuffs, but rather a bitwise approximation. It is possible to be off a few points if the numbers get big enough.

But I digress.

Like blades, accuracy boosts and debuffs work as multiplers, not adders. Each step in the calculation adds or subtracts a percentage of the running total.

It just so happens that with 100% and -50%, you get the same answer both ways. :-)

- Stephen Earthmender
Life Wizard, Pixie Realm

Explorer
Sep 26, 2013
61
Thank you Stephen. Now it makes perfect sense. I appreciate the time you took to explain the correct math.