Gengar ex features a distinct 3D art style, while the border in this card is silver as it was for ultra-rare and secret-rares during the set, and the card itself displays a fitting purple mist background which serves to support the unique art style.

Source: https://screenrant.com/pokemon-tcg-most-expensive-gengar-cards-worth-money/

Massachusetts-based Biogen has gotten the green light for a breakthrough ALS treatment that targets a devastating, ultra-rare genetic form of the progressive neurodegenerative disease.

Source: https://www.coloradohometownweekly.com/2023/04/27/biogen-receives-fda-approval-for-breakthrough-als-treatment-pivotal-moment-in-als-research/

Much like the Cereal Rations, this ultra-rare add-on provides the Xenomorph with information.

Source: https://gamerant.com/dead-by-daylight-best-xenomorph-add-ons/

The FDA recommended the biotech conduct a randomized and placebo-controlled study—a challenge in any ultra-rare disease.

Source: https://medcitynews.com/2023/02/fda-asks-gene-therapy-biotech-to-run-clinical-trial-that-might-be-impossible/

The market’s recent upward momentum has been so strong that it triggered an ultra-rare technical indicator that only flashes when the market is just starting a huge rally.

Source: https://investorplace.com/hypergrowthinvesting/2023/11/rare-zweig-breadth-thrust-indicator-suggests-hefty-gains-ahead/

This is not how you treat an ultra-rare, valuable Ferrari.

Source: https://jalopnik.com/i-am-an-ultra-rare-ferrari-how-dare-you-not-pay-attent-1850928048

This something is an ultra-rare price momentum indicator.

Source: https://investorplace.com/hypergrowthinvesting/2023/01/this-stock-market-indicator-shows-a-rally-is-around-the-corner/