There can be different types of rare cards, for example, a rare card could be a simple holofoil card, this is a card that has a shiny background behind the Pokemon art
That means you can swap them around as you see fit, but there are plenty of other Legendary Creatures to use as a Commander, too
I received an advertisement from PCSportsCards with this in a photo 5 Likes shizzlemetimbers February 25, 2022, 12:49pm 17 @thecharizardauthorty, Theres a few out there, the mislabeled Charizard (minus 1) and there is a Gyarados no rarity 10 with normal label (plus 1)
That seems to have been the philosophy of Wizards of the Coast (WOTC) when they produced their 1994 Magic: The Gathering (MTG) Revised set
The owner can recast it, but it's temporarily out of play, which can be a significant tempo setback for your opponent