Symbiosis is out of the question, it does the exact opposite of Magician, giving the target an item instead of taking it.
Now, Magician and Picpocket are similar, but ot identical.
The Pokémon steals the held item of a Pokémon it hits with a move.
Steals an item when hit by another Pokémon.
a Pokemon with magician steals the opponent's item when it hits it with a move.
a Pokemon with Pickpocket steals th opponent's item when the opponent hits it with a move.