Many a times, i've waited for that white mana source to show up while Wrath of God sits useless in my hand, and that is playing blue/white!.
Good luck with a 3 color.
Also, using Painlands waiting to set up a Confinement lock can be painful, unless you draw what you need fast.
What set was Enlightened Tutor reprinted in? I remember it back in Mirage( i think

), but haven't seen the reprint.
If so, it's not legal in Extended right now (if not ignore my ignorance )