Nero the Phantom Thief
Concept: A poke based AP support that specializes in jukes. The kit will play sort of like a cross between Shaco and Leblanc though being a support he will lack their damage as well as lack crowd clear. His auto attacks are melee.
I am not going to go into the scaling and base damages of the abilities, as that would require testing to balance. Again, his damage should be relatively low compared to other ultra mobile AP champs.
Passive: Sticky Fingers---- Abilities used on champions pilfer 5 gold. This passive cannot be used on the same target for 5 seconds. Yes this includes ally champions if you are a douchebag (if it's too powerful, then it can be changed to not actually remove the gold from the targets inventory; though I do think that's less fun).
Q: Phantom dash---- Dashes forward in a skillshot. Enemy champions hit by the dash take magic damage and are slowed. Ally champions that are hit by the dash get a slight movement speed buff. (Doesn't hit minions)
W: Thief's Mark--- Click target ability fires 3 sprites that deal magic damage and mark the target. The next person to auto attack the target will deal bonus magic damage and pilfer 5 gold. The 3 sprites are similar to Bard meeps in that they will each proc "Tribute" (spellthief edge).
E: Escape Artist---- Teleports a short distance (roughly the same as arcane shift) and leaves behind a temporary wire trap. If an enemy champion steps on a wire trap they take a small amount of magic damage and are snared for a short amount of time. (basic combo is to Q to get in front of an enemy's path then E away to try and snare them)
R: Spellthief---- Copies the ultimate of target champion. Casting the ultimate will cause you to temporarily take the illusory appearance of target champion (so if you are using it on an ally you can try to be decoy). This spell does not copy any of the stats of the target champion other than becoming ranged (if the target is ranged), as well as their movement speed. In other words, if you are building AP don't copy a Fiora ult and expect to do any damage. Similarly if you were to use Shyvana's ult you would use her dragon dash, and look like a dragon; but you would not gain the tankiness of her passive. (the rest of your abilities stay the same)---- also, 4 shacos!
Appearance wise, I'd say a blue coat with a scarf covering the face, goggles, and black hair.
Open to any suggestions for better balance.