This is a versatile tutor target for Urza's Saga, one of the best cards in both Modern and Legacy
Tapping down an Urzas Tower in your opponents upkeep can effectively Time Walk them, and it can give a number of decks that little bit of time they need to take over
If you happen to be building a strict theme deck, you will probably want to dip into almost all of these cards, as well as Might of Oaks (the Urza's Legacy, version), Monstrous Growth (the Portal Second Age, version), and the amazing Squirrel cards before Odyssey
There are still cards in the deck like Chain Reaction that arent part of the goal, but I cannot win a game that I have lost, so some answers remain
Wandering Archaic or Dualcaster Sage, as Ive come to call it is a way to gain value and provide wild choices for the table