This seems pretty strong for a Common
Harmonic Prodigy helps to get your battlefield set up much quicker than normal , allowing you to get a head start on all your opponents
Sorin Markov Sorin of House Markov Sorin the Mirthless Sorin's Guide Sorin's Thirst Sorin's Vengeance Sorin, Grim Nemesis Sorin, Imperious Bloodlord Sorin, Lord of Innistrad Sorin, Ravenous Neonate Sorin, Solemn Visitor Sorin, Vampire Lord Sorin, Vengeful Bloodlord
So, you can play Umara Skyfalls as your extra land for Dryad of the Ilysian Grove, or off the top with Bolass Citadel but not off the top with Radha, Heart of Keld
For example, Rielle and Oskar both have abilities that like having cards in the graveyard
Best Cards: Chitterfang, Squirrel General: Probably better than Hazel in many squirrel decks, Chitterfang is still the definitive Squirrel commander