Dranzer: Honestly my favorite GMax design, it is the only one I've specifially hunting a shiny den for
Caretakers Talent As far as token generators go, Caretaker's Talent is on the weaker side as it requires you to already control a token

Nadir Kraken Noxious Gearhulk Obscura Interceptor Psychosis Crawler Sheoldred, Whispering One Solemn Simulacrum Sun Titan Toluz, Clever Conductor Wonder Instants (13) Anguished Unmaking Arcane Denial Change of Plans Dihada's Ploy Dovin's Veto Esper Charm Lethal Scheme Obscura Charm Obscura Confluence Path to Exile Swords to Plowshares Teferi's Protection Void Rend Sorceries (11) Council's Judgment Damn Dread Return Emeria's Call Farewell Lingering Souls Living Death Reanimate Stitch Together Toxic Deluge Unburial Rites Enchantments (4) Animate Dead Drake Haven Teferi's Ageless Insight Whip of Erebos Artifacts (9) Arcane Signet Azorius Signet Dimir Signet Fellwar Stone Mind Stone Orzhov Signet Sol Ring Talisman of Dominance Talisman of Progress Lands (35) Arcane Sanctum Brightclimb Pathway Celestial Colonnade Clearwater Pathway Command Tower Creeping Tar Pit Demolition Field Deserted Beach Dimir Aqueduct Drowned Catacomb Evolving Wilds Fabled Passage Glacial Fortress Godless Shrine Hallowed Fountain Hive of the Eye Tyrant Island x4 Isolated Chapel Karoo Plains x4 Raffine's Tower Shattered Sanctum Shipwreck Marsh Spymaster's Vault Swamp x3 Terramorphic Expanse Watery Grave Raffine, Scheming Seer is a great Esper commander

Edit: Tyranids brings up a good thought - Ancient Mew or another iconic vintage card would be a great addition, you can tell him the story behind it and introduce him to the boomer side of collecting
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Infinite Possibilities () The infinity symbol is rare but game-defining when it appears