This is my Tooth and Nail deck. It is based on playing Tooth and Nail using the bunch of mana that Urza's lands will give. I usually don't follow any format playing MTG since I play with my friends, so we use any card we want :D.
There are two possible combos to use when you play Tooth and Nail:
How does the combo work: Use Kiki-Jiki, Mirror Breaker to copy
Sky Hussar
. When the copy enters the battlefield Kiki-Jiki, Mirror Breaker will untap. Do it all the times you need and since all the copies have haste, win.
About other cards within this deck, I will mention some of them:
Wall of Roots gives us the ealry defensive capability and one green mana that we might need to cast the Tooth and Nail. I love it.
Eternal Witness allows us to recover anything that has been killed, pretty much countered Tooth and Nail.
Wurmcoil Engine
, Karn Liberated,
Sundering Titan
, Platinum Angel: if you get all three Urza's lands very early, you will have a lot of colorless mana, so these three are colorless monsters that will allow us to wait until we are able to cast our combo.
Sylvan Scrying can search our library for a land, it hasn't got to be basic; we can tutor our Urza's lands pretty easily.
Sakura-Tribe Elder an early blocker and allows us to get an aditional mana so we can reach that desired 9 mana.
Sensei's Divining Top is really powerful for evrything so.
Moment's Peace can save us twice when we play those games where you can't get your combo off and you need two or three more turns to do it.
Finally, Boseiju, Who Shelters All negates your oponent from countering Tooth and Nail
