An insane number of bugs in all modes, some of which break the game entirely, thousands of absolutely left for dead cards not getting revamped or updated, only about 10% of cards are even meta-worthy in wild, people cheat by editing a txt file, modes are in beta for years and bugged on "release", real money per pack cost is absurd but necessary to get anywhere, dust costs are inhumane. To my answer: dozens of bugs each expansion, i consistently encounter half of what is publicly known.