Untruth is still a lie wether you beat around the bush or flat out fabricate it. Its still a Deceit roll.

Note that maneuvers are different.
While they work as aspects, they are much more powerful in effect.

If you make a maneuver to throw glass dust in the eyes of the enemy, he will be Painfully Blinded.

As long as the maneuver doesn't get removed (somehow), it will stick to him(and his eye balls).

Him being blinded means he cannot target with a gun, he can't defend from an incoming attack if he is relying on sight, he can't soulgaze or be soulgazed, you can't tell the color of his eyes, etc

You might think this is kinda game breaking. Well, it is. I've won many battles debuffing the enemies. To think, an air evocation, of power 3, in the form of a little tornado, for only 1 exchange, was enough to blow a thaumaturgical ritual due to all the stuff there being blown. The caster had so much backlash, he couldn't deathcurse us since he had nothing left. Also, the caster of the evocation had 4 consequences, free to tag once on the victim, since she inflicted them.

That was a +10 for a kick to the face.

However, a maneuver can be removed in MANY ways, and the victim always gets an instant first save. The guy i threw glass at could have dodged with athletics, blocked it with Fists, or Weapon, he could have used Scholarship to notice the move, alertness to auto close his eyes or Resources to have a servant specifically payed to put his hand in front of his eyes when glass is thrown towards them.

Have fun making your enemies useless. Gloating is a free action.

Decapitation is not unique to the head. Dismemberment is a proper catch for this game system.

Immortals cannot regrow hands, they CAN attach them. Something done not in combat, linked to their Mythic Regeneration. Which they have. not should have, have.

Living dead with, say, condition to be burned to nothing, can attach a head back and sow it or glue it
Creatures like a plant monster, or my favorite, a troll. Regrow the head or the body, or both O_o

You should take dismemberment as a catch because decapitation usually means being taken out. No head to see, smell, hear makes you useless.

Minor consequence: Cut fingers, I can't hear anything, Who turned out the lights?
Moderate consequence: Severed hand, Severed foot, There is a piece of my ass missing.
Severe consequence: Severed arm, severed leg. Half of my head is over there.
Extreme consequence: Armless, Legless, "Half of me is dancing, the other is singing", headless - should imply that you are somehow alive.

1) white court are humans with a "demon" in them. they need to eat food for themselves, and emotion for said demon. They are affected by red court saliva, and since they have blood, i can be drunk by the reds. However! our DM says the venom lasts 2 days for vanilla mortals, 12 hours for the supernatural, non fey.
2)12 hours. inhuman regeneration could be used to half this to 6, but it would disable the minor consequence due to it being busy. My character spent 3 hours doing pushups, essentially an endurance contest, to sweat the crap out. replaced the red saliva exposure with a mild consequence "tired". which a goodnight sleep took it out.
3)red sunlight removes their human guise, and satisfies their catch. So if you get one in the sunlight, non toughness or regeneration for them. Its like you performing operation on yourself while in a bathtub of lemon juice. It does not kill them, but it does damage black court.

Due to the stress of the catch being satisfied, the vampire must make discipline checks or get hunger stress. Thats why they can eventually be taken out in sunlight, and its why Bianca had to feed on the chick, when Dresden left her place. She had to feed her hunger due to the stress.