Even if youre not looking to maintain the value of your cards per se, I doubt youre eager to have a bunch of warped, curled, or bent cards
Austere Command All five cards in the Command cycle see play in Commander, but Austere Command which can destroy troublesome artifacts and enchantments is undoubtedly the MVP of the format
Depending on your opponents play, you can use cards to defend or attack thus leading to a victory and leading you closer to defeating a boss
Not only that, it has strong cross-appeal: fans of Legendaries, gold cards, and Mega Evolutions all converge on this one, which is why copies in clean condition are likely to remain some of the most hotly contested listings on the secondary market
I will go into other possible attackers after covering my current list, but I think you are always keeping Keldeo-GX in the list regardless of what other attackers you try