Gnome Cunning. Skeemo has advantage on Intelligence, Wisdom, and Charisma saving throws against magic.
Spellcasting. Skeemo is a 9th-level spellcaster. His spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks) He has the following wizard spells prepared:
Cantrips (at will): fire bolt, light, mage hand, prestidigitation
1st level (4 slots): detect magic, mage armor, magic missile, shield
2nd level (3 slots): misty step, suggestion
3rd level (3 slots): counterspell, fireball, fly
4th level (3 slots): greater invisibility, ice storm
5th level (1 slot): cone of cold
Dagger. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit:4 (1d4 + 2) piercing damage. Or Ranged Weapon Attack: +5 to hit, range 20/60 ft., one target. Hit:4 (1d4 + 2) piercing damage.
Skeemo became the Master of Magic for the Black Network in Waterdeep, setting up a cover in the Trades Ward in the form of a cramped little shop called Weirdbottle's Concoctions. Most of his potions and elixirs are nonmagical, but he crafts magical ones for his Zhent friends.