Do not discard your cards: they might become more precious than any of your cards.
Virtue and Valor is a strategy other commander precons have already explored and the deck itself plays out very straightforward
If you can get value from milling over a card at any point in the game, the Mortuary will often feel like a 2-color land that drew you a card
Companions Companions ask a little bit more than partners
Distant Memories lets you make only one of the two piles, but the other is randomthe card would be a lot more interesting if both piles were face down and your opponent had to guess whether the card you tutored was better than a Concentrate
Whether Ravensburger severely underestimated the popularity of the game, or the scarcity is an intentional marketing tool, I dont know, but as a new player or someone trying to get into the game, you may not be able to find any product to buy for a while