At the very least one could determine that they are unaltered, but were getting into super cool levels of forensic analysis into determining whether the layers of ink on top match the chemical composition of the ink layers on bottom
Eldrazi Tron (7.1% of the Winner's Metagame) 4 Eldrazi Temple 4 Urza's Mine 4 Urza's Power Plant 4 Urza's Tower 4 Kozilek's Command 4 Ugin, Eye of the Storms 4 Expedition Map 4 Ugin's Labyrinth 4 Devourer of Destiny 4 Karn, the Great Creator 4 Thought-Knot Seer 4 Mind Stone 3 Glaring Fleshraker 2 Dismember 1 Swamp 1 Vexing Bauble 1 Ulamog, the Ceaseless Hunger 1 Trinisphere 1 Sire of Seven Deaths 1 Snow-Covered Wastes 1 Chalice of the Void 2 Disruptor Flute 1 Trinisphere 1 Tormod's Crypt 1 Ensnaring Bridge 1 Liquimetal Coating 1 Cityscape Leveler 1 The Stone Brain 1 Torpor Orb 1 Walking Ballista 1 Extinguisher Battleship 1 The Filigree Sylex 1 Chalice of the Void 1 Skysovereign, Consul Flagship 1 Vexing Bauble Eldrazi Tron harnesses the iconic trio of Urza's Mine, Urza's Tower, and Urza's Power Plant to enable explosive openings
If you have many cards you'd like to sell quickly, use Auctions to let people bid on your stack
Hexdrinker may cost total mana to summon and fully level it up, but you can split that up over several turns, albeit only at Sorcery speed
While one strategy may be to horde a bunch of counters and swing out in one big turn, the untap effect is likely more potent
Chel & James remained friends, and after Chel was no longer working for WotC, he would occasionally give James stuff to sell
