With a searchable blocker like Kuween, you now have another layer of protection against any shenanigans that your opponent wants to try against Little Miss Baby 5 or Jewelry Bonney, if youre playing the extremely popular Supernova package
The ability to search any land and not only basics makes it great and you can think about a tool box with utility lands
There's a reason the old adage is "Bolt the Bird" rather than "Pacify the Elf." On top of this are more layers, usually also downsides: PacifismPacifism is vulnerable to a DisenchantDisenchant effect drawn at any point during the game, the creature's controller can bounce it back to their hand, and they can still use it to power some spells like Rabid BiteRabid Bite, or to sacrifice to cards like Village RitesVillage Rites
You need some major deck thinning (land fetch), or just cut the amount of lands down
Sliver Legion becomes an absolutely massive anthem effect to the point where it was included in some The First Sliver combos in Modern
That's a lot of bottle caps, so you better start saving.
