You can still run other themes in your deck, but having a couple of Mutate 3/4 CMC cards in your deck gives you the ability to build your own bomb to either win the game or put out a creature to stop your opponent
Lillie's Clefairy & Rhibombee Are Utterly Adorable Bright & Happy Scenes Featuring Cute Pokemon Lillie's signature Owner's Pokmon is her Clefairy, and it managed to get its own secret rare artwork that's undeniably cute
card you already knew about
If you can kill all their guys, a couple of mana sources and perhaps a discard or two into the mix for good measure as well then you have just won, simple as that
Briar, Special Illustration Rare Briars Special Illustration Rare makes its appearance as the seventh most valuable Stellar Crown card and it is also the first Supporter Card on the list
This is what collectors call selling "singles." After opening a pack, you can list the rare and holographic cards on online marketplaces where other collectors are looking to buy specific cards without having to open packs themselves