The card type was introduced in Future Sight as tribal on Bound in Silence, and more cards were printed in sets like Lorwyn and Rise of the Eldrazi
Meanwhile, black is going to use life gain triggers or life payments to present us with various forms of card advantage, burn, or even the occasional big beater of its own
However, the localization of Final Fantasy 6, where the creatures first appeared, called them Cactrot', which was later modified to Cactuar'. Interestingly, later Final Fantasy games adopted both names
With cards like Noctis, Prince of Lucis, capable of winning a match with a simple three-card combo, it's no wonder some of the rarest cards can fetch such a high price, even if some are likely to decrease in value over time