Talk:Ryougi Shiki (Assassin)/@comment-72.141.197.188-20180206053239/@comment-34041338-20180206063225

The formula that decides whether or not an instakill succeeds is here hitRate * deathRate * (1 - instantDeathResistUp + instantDeathResistDown)

Say Shiki if fighting another Shiki and NPs with level 1 overcharge, we know her deathrate and is listed right on this very page along with her stats, her's is 44%. We know the hitrate as that's 100% listed from the NP. If she uses her first skill that does instantDeathResistDown, at level 1 it does 80%, and instantDeathResist up can be something like magic reistance, or in the case of some bosses a hidden value, in our example Shiki has no buffs that will increase her resist up. The formula now becomes. (remember that percentage values are just moving the decimal over two places.)

1 * .44 * (1-0+.8) = .792

The enemy Shiki has a 79.2% chance to get instakilled. Now, for some bosses that have incredibly high deathresist, supposedly 500%, if we enter that into our formula keeping everything the same.

1 * .44 * (1-5+.8) = -1.408

It has a -140.8% of succeedding and obviously fail everytime as that less then 0% chance of success. To instakill a boss with that high death resist, you would need over 500% in death debuff resists to just get a chance in the first place let alone guarantee.