This is supposed to enable Flurry, but it seems to me there are way better ways to do that than a creature who is never on the battlefield during your opponents turn, and one that takes a ton of mana just to be able to trade when it attacks
Falkenrath Forebear can give you a steady stream of Blood tokens throughout the game as long as you can deal combat damage with it each turn
(As you cast that spell, you may sacrifice a creature with power 2 or greater
Some commanders might not be so simple
My prediction: Over Garland, Knight of CorneliaGarland, Knight of Cornelia Sweet design, but theres a reason this is uncommon
On top of all that, Arahbo passes the bear test. Its a 5/5 for 5 mana, and theres no reason its 2-color mana value would slow you down in a typical game of EDH