The Fabled set for Disney Lorcana just dropped, and Amethyst players are eating good
Based on context, there's a chance the term "challenge" is a less confrontational version of battling or attacking an enemy card
To offset its aggressive mana value, The Gitrog Monster requires you to sacrifice a land on your upkeep, or you have to sacrifice it
Description Gengar (#94) is a mischievous Ghost and Poison-type Pokmon known for its shadowy grin and playful pranks
Infect decks or Yawgmoth, Thran Physician decks could be a good place for this card
Massacre Girl, Known Killer Obviously this is a party with the original Massacre Girl in Commander, but in Standard this comes down and refuels your hand in your black aggro deck on just the turn you need it