In one of the many brews provided by Rey for Amonkhet Standard, he made a list of a tribal deck based on Cats. The revelation of Regal Caracal was probably the main reason. Here below is his first version of the deck, whom he nicknamed as Hello Kitty.

Deck Name: Hello Kitty

Creatures
4 Sacred Cat
4 Metallic Mimic
4 Long Tusk Cub
4 Pouncing Cheetah
3 Prowling Serpopard
4 Felidar Guardian
4 Regal Caracal
2 Felidar Sovereign

Instants/Sorceries
4 Prepare//Fight

Artifacts
2 Panharmonicon

Enchantment
3 Cast Out

Lands
4 Canopy Vista
4 Fortified Village
6 Forest
6 Plains
2 Scattered Groves