...And they are glorious. Some of my favourites:
Overkill: Applies overkill damage to the next hit while action skill is active (Hunter)
Fury: Each consecutive hit grants +5% ATK but -1% ACC, stacks reset on miss (Berserker)
Take Aim: Using the Defend command gives the next attack perfect accuracy (Berserker)
Retention: Missing an attack only loses half your Fury stacks (Berserker)
Radiant: Shares 50% of HP regen with the entire party (Crusader)
Dual Wield: Can swap weapons in battle (Crusader)
Engaged: Swapping weapons in battle grants +30% ATK for 10 turns (Crusader)
Elemental Burst: Uh, basically three different types of elemental attacks (Elementalist)
Conversion: Grants resistance to the element of the last elemental Burst used (Elementalist)
Chaos: Killing an enemy gives your equipped weapon fire, ice, and shock element for 10 turns (Elementalist)
...and these are just a few. I've got 120 different passive skills coded in across 4 different classes, each with their own unique functionality. This is the most fun I've had breaking RMVX in years. So stoked to get to work on the story now.