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It means they are tools for advanced buyers

Tons and tons of casual players dont use the site, and theres a bias towards preconstructed decks as people do variations on precon with upgrades so some of the staples have staggering inclusion rates

But theres design space for that kind of cost: effect ability in contrast to the non-keyworded pay a bunch of mana for one counter on a common we see on cards like Unholy Officiant

Mega Charizard Y ex Pokmon TCG Pocket Deck Strategy Guide Mega Charizard Y exs Crimson Dive attack has the ability to one-hit-KO every Pokmon in the game, though the downside is the recoil damage it takes