Feline Ferocity

Feline Ferocity is a 100-card Commander precon from Commander 2017, released August 25, 2017. It is led by Arahbo, Roar of the World, a Selesnya commander.

Arahbo, Roar of the World

Eminence — At the beginning of combat on your turn, if Arahbo is in the command zone or on the battlefield, another target Cat you control gets +3/+3 until end of turn.
Whenever another Cat you control attacks, you may pay . If you do, it gains trample and gets +X/+X until end of turn, where X is its power.

The list runs 37 lands and 24 creatures, and its nonland cards average 3.70 mana. At today's TCGplayer prices the whole deck's cards come to about $158.84, and the most valuable is Arahbo, Roar of the World at $30.91.