If I recall correctly, this began in the core set with Garruk, Primal Hunter with a rough five-cost with triple Green, but then +1 to make a 3/3 Beast that's Green or -3 once to draw
There are a bunch of options, really, from Baleful Mastery and Infernal Grasp, to Price of Fame or Dismember
Though it is not a starter or legendary, its place in the Unova region is noteworthy due to its unique evolution method, which encourages player interaction and trading, a hallmark of Pokmon gameplay dynamics
From there, you can use the Herald as material to summon "Underworld Goddess of the Closed World" to at least resolve the board
So, if I understand right, only Yusei, Jack and the protagonist are strong-willed enough to not fall into the villains trap