It technically does a little bit, but youre not really interested in that
There is a simple ratio, usually given in pre-release packages
6 Oviya, Automech Artisan Like Kona, Rescue Beastie But A Little Different 4 Mana Green Legendary Creature Back in Duskmourn, the creature Kona, Rescue Beastie, was introduced, which allowed the player to put any permanent onto the battlefield from their hand as long as Kona was tapped in their second main phase
Elspeth can protect herself from a +1 effect while Jace can only bounce dorks for -1 should he need to protect himself
Number 158 Language English Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (11/8/2024) Everything that is specified by the effect creating the original token or tokens will also be true about the additional token or tokens created by Doubling Season's replacement effect
Finally, TCG and JCC are actually the same thing