The Draft Season "tavern brawl idea"

Hi guys and gals, So i thought of this tavern brawl idea: Deck type: doesn't matter "can be random, fixed (30 of the same card, (make your own deck) type" The idea: at the start of your turn, you discover 2 cards "of the same rarity", you chose one card to get and yor opponent will get the other one. And both cards will be either 2 minons/ 2 weapons/ 2 spells. Thanks for reading