I dont really like the gamble here though, as it reminds me of Clinquant Skymage (which was generally mediocre)
If a monster in defense position is attacked, its destroyed if the attacking monster has more attack power than the monsters defense power
Luckily, with blue in the mix, drawing a bunch of cards is easy (Brainstorm comes to mind)
This meant that Blue had "U" and "E" and Black had "C" and "K." (In the early days before Wizards spelled it out, incidentally, some players used "K" for black.) Why did we end up going with U
Traverse the Ulvenwald essentially plays as a tapped land when needed and an Eladamri's Call later in the game
Its fantastic in decks that care about lands, turning basics into combo pieces or value lands, or helping to fill your graveyard for cards like The Gitrog Monster or Titania, Protector of Argoth