While Kari Zev certainly came across as a scoundrel in her original Kaladesh appearance, she wasnt quite on the level of diabolical villainy that Baral represented
Illustrated by: Desmuncubic Not Legal Traditional Standard Not Legal Traditional Alchemy Not Legal Traditional Explorer Not Legal Traditional Historic Not Legal Traditional Timeless Rulings 2004-10-04 The timestamp for the "in your graveyard" ability is set at the time that this card goes to your graveyard, regardless of whether you control a Mountain at that time.
According to MTGTop8, this is commonly the most used card in the entire format
Thrummingbird An uncontested Thrummingbird is a scary turn-2 play
At the end of that exchange youll have traded away your two worst cards for two, usually better, cards
Thats not to say the current card design philosophy is bad: this method of assembling a deck was way harder, and took way more time, than brewing a Commander deck using modern cards and modern commanders