Pairing this with an aggressive red deck, an unblockable blue threat, or even a low-to-the-ground green behemoth will knock opponents out of the game before they can blink
She also has an ability which, for the cost of exerting The Queen, allows you to look at the top 4 cards of your deck and put an item card you find there in your hand, or ppay it immediately for free if it has an Ink cost of 3 or less
Its used in competitive formats to make extremely cheap, outsized creatures with terrible drawbacks hit the battlefield without those drawbacks mattering (usually Phyrexian Dreadnought)
He's just not that special
Thassas Oracle is a two-mana creature that allows you to see the top X cards of your library, where X is the devotion to blue
A few swings of Commander Damage later and youll have yourself a victory in hand