A 5/5 flying and first strike body is good enough to fight, but if it survives until your next upkeep, its giving you two cards you can play, and Treasures/creatures along with them
Burning Hands Number 2 and Number 1 on the list are VERY close, nearly tied
Original Innistrad and Modern Masters are widely considered to be some of the best Draft formats of all time, and they both have money staples like Liliana of the Veil, Snapcaster Mage, and Tarmogoyf too
If you run into another Graveyard deck, then you get to hate on them pretty hard
I'll make it as concise and clear as possible on how to make the combo repeatable, though you should know that using any infinite combo might be grounds for a rule 0 discussion before your game
However, Urza will be teaming up with a much more reliable planeswalker threat to keep control afloat: Teferi, Temporal Pilgrim