arkham horror card game Horror: The (Revised Core Set) | Board Game Serving simultaneously as both a continuation and a fresh starting point Arkham Horror: The Card Game
Description
Now, considering it's only possible to trigger this ability once during each of your turns, it's easy to see why it hasn't translated all that well in a multiplayer setting

If you are comparing Pokmon bulk rates per 1,000 cards, use the chart above to estimate your total

0.6 per cent chance: 0.200 per cent per card (5th card probability rate, regular pack) Rainbow Full Art Articuno EX, Rainbow Full Art Gengar EX (Mewtwo Pack) 0.11 per cent chance: 0.055 per cent per card (4th card, regular pack)

My son pulled this card out of a loose booster pack from Sun & Moon

I can imagine the reason why it was left out was that it was just extra unnecessary text, and it was kinda boring (one third were just Grassland) and didnt add anything to the game or actual flavor, so it was probably the first to go when they were slimming things down

Cosmoem is classified as a 2-Diamonds card in the Celestial Guardians set
