Okay, is Invidia supposed to turn back into Chiro? Due to how the Exile zone in MTG works, if the backside is exiled, she flips to her front in Exile, and then since it says 'enter the battlefield transformed', she enters the battlefield as Invidia. Otherwise, I really like her and Charlie. Humanitas's Tap ability could be X, T: Prevent X damage and she'd still be balanced. It's overcosted as is.
Castitas should probably have Vigilance, so she can attack and then burn an opponent. Or you could reduce the cost of the burn effect to like. RW.
Anything I would say on Diligentia has been said already.
Temperantia's abilities could stand to be cheaper. And as it is, since she has no self buff with her gluttony and has low stats, I'm probably never going to bother giving her first strike, since I'm never going to block or attack with her, since being able to shut down an opponent's blocker is way more useful.
Avarita is cool! She's unlikely to survive most fights, meaning that she's best used picking off your opponent's one power combo engines.
Superbia is really cool, but his math is going to start getting hard to track once he starts gaining counters and creating roles. I know most of my play group use the same dice we use for Counters to track a variable stat's creature's stats.
Onto the misc cards.
I actually think Flame Barrage is a pretty neat way of doing it, plus it combos well with cards that care about doing 1 damage to a player.
I honestly want Panicking Civilians to deal damage to their controller, but that's just because I've been brewing Auntie Blyte recently and I love hurting myself.
Embrace Virtue and Indulge in Vice are both pretty good executions of their thing, but they're a bit boring. I'd pick them in Draft, but I'd never run them in a Constructed or Commander deck.
Fidget Spinner's First ability is cool, but blocking and attacking are different than Fights, so the first ability would have to be worded as "When {name} blocks a creature, remove that creature from combat, and it fights a non-Fidget Spinner creature chosen at random".
The second ability is cool, but effectively it's the same as giving it Hexproof. I'd rework it to be something like "When a creature you control is targeted by a spell or ability, you may choose another valid target at random to change to become the target of that spell."
