There are a bunch of units that can inflict paralysis (sefia, falma,nalmika are the ones that pop up in my head). And even then its not needed.
Did fine with the team I posted above with zero revives used. Tridon is literally the gamechanger unit of the game imo. Removes 80% of the luck factor for boss fights.
I just said it. Cardes is a luck fight.
You got lucky, so you think he's easy.
I didn't get lucky for several attempts, so I think he's a BS fight.
I had a 13K health 2K defense unit with no weakness go down from full health in a single round. The only reason you think he's as easy as you do is you never got unlucky.
Tridon? Luther strips Tridon's shield. Mitigation buff? Luther strips that too.
There is literally nothing you can do but get lucky to survive. All those paralysis buffs you are dismissing have a < 100% chance to apply. Even Semira's, and hers is way higher chance than most.
Now there's a fine line between "Needing to get lucky" and "needing to not be unlucky", so I don't know where the line actually is. Maybe I'm the unluckiest guy ever. But I doubt it since my real life friends needed multiple tries too.