There are better Amethyst/Ruby lists out there, but these decks are designed to focus on and elevate the things that already work in the original starter deck
Beyond gameplay, this deck stands out for its custom artwork, collectible feel, and eye-catching presentation
And bonus, has a landfall of gain a life
That is, it may be only dealing 10 to the defender and then switching it for one from the bench that has another amount on it already (in this case, having 20 more damage than where the defender was pre-attack) -- making it appear to do 20 damage instead of 10
This card gains the following effect, based on the number of monsters your opponent controls
Players of Group Hug decks would answer that question with a few of their own: why are you already thinking of them as your opponents, and is beating all of them actually necessary