The Chieftain can spend five mana and give any dork +2/+2 and trample for the turn, which is a nice mana sink later and a nice boost of power and trample is really strong with the growing size of your army over time
It felt like it had the ability to compete in any kind of matchup with basically none of the free wins and auto losses it used to suffer with (yes, not all consider free wins to be a suffering
They may have visually minor imperfections
I expect to see her a lot in decks that can turn creatures sideways, including a deck from my in-person playgroup thats built around Grenzo, Havoc Raiser and a suite of supporting goons that allow him to literally rob his opponents blind while generating an insane amount of value
Fun but on average not too crazy unless you're loading up with extra turns, and at that point what isn't crazy
Use your Pack Points, obtained from opening packs, to craft key Supporter cards like Sabrina that are not available in Mewtwo packs