Atomos is naturally immune to slow. Meanwhile, Exdeath has a Magic Evasion of 85.SpellHit%=SpellHit%+AttackerLevel−TargetLevel
If the spell is multi-targeted the Spell Hit% is halved. Spells that are naturally multi-target do not suffer the penalty. If the target has Shell, the Spell Hit% is also halved, and if the target is a Toad its Evade % is reduced to 0.
The game generates two random numbers between 0 and 99.
If N1 >= Hit%, the spell misses
If N2 < Evade%, the spell misses
"And then he turned himself into a splinter."
"Evilest **** I've ever seen."
Afterwards I ventured through the pyramid, rescued Lenna from Mary Jane, made a visit to the Phantom Village, picked up three Legendary Weapons and, most importantly:
Sensibly, I went after Bahamut next. It took me about four tries. On the fourth try I managed to afflict him with Slow which meant he was able to only get a single Poison Breath off before he croaked.
Bahamut's Level: 99
Magic Evasion: 33
Afterwards I climbed the Phoenix Tower and got two pairs of Running Shoes to drop. Nice.
Pretty easy fight due to Haste 2+Slow 2. From there I just had to guess which one is the real one. It took his copies around two minutes to realize that the fight was over which was kind of annoying.
Wendigo's Level: 7
Magic Evasion: 10
Fork Tower: I actually had a fair bit of trouble with the Minotaur guy. It was still a oneshot, but a close one. Equipping the Knight with the Defender came in clutch several times.
As for Omniscient, he was kind of a joke due to being vulnerable to Old and Slow. His low-health Flare still hit damn hard though.
Omniscient's Level: 53
Magic Evasion: 0
The Three Stooges: This one took me a few Resets to get down and I didn't get a screenshot. They were vulnerable to Demi/Quarter but their decent Magic Evasion made that unreliable. Humorously one of them revived just before I could fire off a spell that finished off the other two.
Their Levels: 37/20/39
Magic Evasion: 60/60/60
With that I got Meteor, which is kind of like Walmart X-Fight. With gambling.
Even with hard-hitting Bolt 3s and Quick Meteors, this took a few tries due to the Tidal Waves. Ultimately, throwing on a Coral Ring that dropped earlier helped me live long enough to finish the job.
Leviathan's Level: 37
Magic Evasion: 70
I cut it close due to how much time magic eats up. Quick Haste 2+Meteor alone eats up like 20 seconds.
Odin's Level: 2
Magic Evasion: 80
I'm investing the bulk of my fortune in Flame Rings in the hopes that they'll come in handy for some AOE healin' during the final boss.