Then you can tap it with two mana to keep a legendary dork from being blocked this turn
Not only is it a huge creature with great keywords, making it very difficult to deal with, but its ability lets it go infinite with several other cards
The cards are always heavily inflated before release, and many of them drop below a dollar after a while
(They're artifacts with ", , Sacrifice this token: You gain 3 life.") At the beginning of your end step, you may pay and sacrifice a token
But 7, hard-to-cast mana is a lot, it only hits one person, and sometimes you cant use it to get some card draw for yourself
At the same time, by focusing more on the middle ground, Ruby/Amethyst doesnt fair quite as well in the late game as, for example, Ruby/Sapphire that has access to tons of powerful card removal characters and insane lore gaining capabilities