Talk:Ryougi Shiki (Assassin)/@comment-2601:401:4400:C680:A006:7E7D:E16D:1BEF-20170818074116/@comment-27536958-20170820120318

Almost every bosses and servants in the game have really low chance to be insta-killed to prevent cheesing difficult fights with stacking -death resist debuffs and killing them.

So the formula for insta-kill is something like "chance_to_Insta_kill * (1 + death_success_up + death_resist_down) * death_chance". Dont cite me though I'm not sure the exact formula but it's something like that.

So even with 140% chance to insta kill and 100% death resist down, you're getting 280% with the first 2 components of the formula. "Not bad" - you might think. But remember all that is then multilplied with the hidden death chance.

For example if DW doesn't want a boss to be insta-killed, they can just give it 0.1% death chance. So with the aforementioned buffs, the chance is 140% * (1+100%) * 0.1% = 1.4 * (1+1) * 0.001 = 0.0028, or 0.28%, or once every 357 time, the boss gets insta-killed.