Clue adds and (first) blue mana dork
Occult Epiphany over geist snatch for more draw, gets some in the yard, AND token making
Skaab ruinator over geralf's masterpiece: being able to 'cast' from the yard has more synergy with other blues
Ingenious Skaab over Sus Stowaway: more synergies in general, less flipping and reading.
Niblis of Frost over Whispering Wizard: more synergy and evasion. Helps spirits from getting stalled out later.