Choosing three 1* cards, with a 2* and 3* = instant loss, more times than I can count, changing a game of skill and chance into constant chance of failure.
Random, in and of itself, breaks the game, making it unplayable. Getting rid of it would be fore the better, but another method to fixing it could be to change rarity of cards it picks. If I got 60 cards, pull from 3* and 4*, small chance of 2*, even smaller chance of 5*. No 3-4 1* cards, please.
Between Order, Chaos and Random, it makes a fun game involve both no skill, and no fun.