Many Voltron decks struggle at defeating multiple opponents in one turn, so they have to rely on cards like Kediss, Emberclaw Familiar to spread the damage around from their single attacker
Having game pieces be unobtainable is bad, and if you cant afford to pick up a Wheel, dont feel bad about proxying one
In fact we have enough cards that make and interact with Treasures now that you can build a whole EDH deck around them, and I can bet you that Xorn is going in every single one its currently the top red card from the set at 1600 EDH decks on EDHREC, and the third most popular card overall
The deck is simple and solid, with a clear plan thats great for new players
If a pack 'feels valuable' because it has shiny foils and alt-art cards, verify the actual secondary-market prices before spending 20+
You do still need creatures for The Great Henge to draw cards, but it even helps you play the creatures so that you can draw more creatures