There’s more to this than just RNG probably, but I doubt it will ever be proven as the information is not visible and can be passed off.
Do higher level enemies have a higher agile rate? We don’t know. It feels like it.
Is there a value in delves that determines the success rate of spells cast by the AI which have a percentage chance to succeed?
As delves can’t be checked, because the maximum numbers anyone can do is 3 per day, or waste an event, what’s to stop these values being altered by a parameter set? Firstly, we have no idea if that is occurring, and secondly, because of that, and it is tied to monetisation, it could be done. This one clearly is subjective. I’ll leave it there.
As I’ve done every single faction delve without potions, I’ve a great lot of experience on a lot of percentage chance. I can’t give anything other than anecdotal experience, (no-one can) but if I was pushed here’s what I would say.
Gorbil 10% chance to Devour plus a miniscule gem conversion bonus. Not a chance this is accurate.
I have had it devour 4 troops, 1 by 1. I have had it Devour with 0 gems to convert on successive casts - flat 10%. It’s working more like 50%. As the end result is fatal, you remember it clearly, so it’s not about a biased view on some occasional, irrelevant game.
Mimic 1:6 chance to Devour a troop. I have had all my troops devoured in 4 casts, 100% rate from the top 2 Mimics, not once, but twice. I cannot count how many times I’ve had 2 and even 3 devoured, how about every run for a week 2 were devoured? I would say from my fatal experiences, the first cast devours most of the time.
Bladewing - 20% chance to lethal - more than 50% of all AI casts has killed first time. I went through a phase of a week plus where on every run it killed a troop with it’s first cast.
Deathmark from Drowned Sailor - it can get a 30% chance with 10 gems converted. I have had it work against me 90% of the time, even 13 casts in a row in various Sunken Fleet delves. I have also died first turn to the ensuing death mark well over 50% of the times it landed. To the point that it’s so not performing at the right numbers, I was casting my Drowned Saillor first go, regardless of gems on the board, which would restrict it to 20% maximum chance, and it was still death marking 9/10 times.
I could go on. We can’t really check it in Delve, where it hurts the most.
The best thing you can do is accept the anomalies, and if you don’t like it don’t spend so many gems or cash when events come round.
For the first time yesterday I completed a faction event, solely because there was less of the BS from devours/death mark and stuff in the runs and with the teams. If I was going to lose, it would be from my own errors I suppose.
Anything I don’t agree/like, I don’t partake. Arena, odd go, like 2 runs at the weekend for 1 pet in a reward. World Event when we could run Wrath and Obsidius, fab, great fun.
Yet look at this week’s World Event, Knight, was close to the worst class in the game… We got Sir Quentin, what a great troop, excellent troop, fab with yellow… half start for Knights, bumped up Knight class a little, definitely not a bottom feeder anymore. It’s not available in the Knight World Event…