Weve seen this sort of design before on Torens, Fist of the Angels and Selvala, Eager Trailblazer, and it feels like Silk finally gets everything right
Those don't have to be the same three permanents each time
Most of the players were forced to mulligan under seven cards and just go with a couple of tap lands at best
On a male Pikachu, the tail has a pointy end that forms a geometric line, and female Pikachu tails curve at the end, with the two rounded shapes meeting in the middle and resembling a heart
This is a simple first step in building like this, and its not the first time weve seen it
While only affecting a single creature type restricts Cavern, typal decks can leverage this to ensure their threats get through countermagic, be they efficient merfolk, monstrous dinosaurs, or sneaky goblins