They are limited and exclusive to those who work at a pre-release event for approved card shops and stores, meaning they cannot be obtained by the average player or collector
This means you should carefully deploy any removal spells in your hand on appropriate targets, since you are less likely to draw more, and you really need to make sure to play around your opponent's board clears
There are also cards like RMS Titanic that sacrifice themselves when they deal combat damage, and others like Combat Celebrant that basically always tradethis commander does some cool stuff
Frankly, Im baffled that the trend has extended to include unplayable cards from sets like Mirage, Alliances, and Ice Age
Then, his latest card in Rise of the Floodborn has him with the full name and quoted nickname
"A Comprehensive Review of Rarity in the Pokemon TCG - Part Two"