It helps to keep me focused and not drift toward temptation
Whether Ursula is challenging, singing, or questing for three, she offers a tremendous amount of late-game value to this deck, and given that there are eight other Ursula cards, it's likely you'll always be able to shift her in when you want to
It makes a decent lord for decks that churn out Thopters via cards like Sai, Master Thopterist, and the lack of a once per turn restriction lets you do some wild stuff with mass Treasure production
Dragons is a great choice if you like tuning decks, but you'll probably want to look elsewhere if you are looking for broad cards that can send you in a bunch of different directions
You can easily make a game winning amount of mana for your deck from this simple tap from fueling an X spell like Jaya's Immolating Inferno or Exsanguinate to dropping stuff like Eldrazi Titans and Blightsteel Colossus and then equipping with Greaves and winning
The combination of seeing five cards and drawing two is surprisingly potent, especially in formats that have good ramp (Sol Ring, Ancient Tomb) and where the power level between cards varies greatly (singleton formats, Vintage)
