Throughout its 17-year history, Magic: The Gathering has maintained a consistent "duel" mentality where each player pretty much is out to win everything for him or herself and everyone has an equal footing
Mind Flayarrrs
Here you can whittle down cards by Commander mana colour identity, casting cost, actual cost, card type, a specific keyword you want on all of them or pretty much anything you can think of
The landslide effect of gaining a mana and a card when you connect can be overwhelming
You could end up stealing something good for seven mana if, for some reason, your opponent plays their bomb into your on-board trick, but most smart opponents will make sure to have a couple of bad creatures around for Riches fodder, which likely makes the average value not much greater than the 3/3 land you get from Rising Miasma
But Kaheera can be the companion in a dedicated Arahbo, Roar of the World EDH cat deck