card drop RNG

[CyrilLucifer]

you mean like him or her? sure, if they just WOULD NOT HAVE RANDOM RULE
thanks to the random rule, beating them is possible about once in 20 tries, combine it with the abysmal low drop rate of the cards (and the fact that one of them is timed), i would rather rip out my own feet than trying them any more (i had some hours with them and NO THANKS)
serious, what is SE thinking? getting RNG over RNG over RNG is no fun at all!

Landenel has terrible AI, he's very easy to beat by just showing weak sides intentionally and trapping him. He's much, much easier than the Heavensward Random NPCs, because they seemingly realized how his AI was easy to exploit. Lewena's just terrible, though fortunately you can still farm the trials. It will take less time than farming MGP you need from Mythril, certainly. I agree that it's not worth it to spend the MGP on them.

(That being said, I've spent 500k+ on Gold Packs and Zidane is still elusive. The RNG is terrible, but, uh, not for the reasons you're offering).