There's numerous cards (no spoilers were shown, but we saw plenty of art) representing Urza and Mishra as kids, showing the discovery of the power stone that sows the seeds of jealousy between them, and leading up to their initial conflict
The Tinker Time March of the Machine Commander Deck set includes 1 ready-to-play Green-Blue-Red deck of 100 Magic cards (2 Traditional Foil Legendary cards, 98 nonfoil cards), 10 Planechase cards, 1 six-sided planar die, a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or nonfoil special treatment card of rarity Rare or higher and 1 Traditional Foil special treatment Common or Uncommon card), 1 Foil-Etched Display Commander (a thick cardstock copy of the commander card with foil etched into the cards border and art), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card.

Most valuable cards in Magic Player Rewards 2001 View the full price guide $469.35 Wasteland Magic Player Rewards 2001 $48.49 Saproling Magic Player Rewards 2001 $33.32 Elephant Magic Player Rewards 2001 $21.45 Goblin Soldier Magic Player Rewards 2001 $19.87 Bird Magic Player Rewards 2001 $15.00 Bear Magic Player Rewards 2001 $5.95 Beast Magic Player Rewards 2001 More cards by John Matson $1,907.80 Wheel of Fortune Judge Gift Cards 2010 $192.79 Shizo, Death's Storehouse Champions of Kamigawa $103.30 Gemhide Sliver Secret Lair Drop $92.06 Commandeer Coldsnap $66.42 Overburden Prophecy $49.46 Wall of Roots Time Spiral Timeshifted $45.00 Furnace of Rath Tenth Edition $38.01 Shizo, Death's Storehouse The List Discover Keep browsing SetMagic Player Rewards 2001 Most valuableTop 100 Magic: The Gathering cards You might also like...
Of course, there is a way to use something like fight that references power after strengthening, but, how should I put it, it's subtle