Rarity and Balance Shifting our attention to the factors of rarity and balance, its important to note that a cards rarity (common, uncommon, rare or mythic rare) determines how difficult it is to obtain from booster packs
Its unique structure certainly makes it interesting to crack open, especially with the increased chance of getting a rare or mythic rare card
The other half of the cards support the theme indirectly, introducing deserts, sandstorms, scimitars, asps and the like
Finally, you can spend 9 loyalty to activate: If target player has fewer than nine poison counters, they get a number of poison counters equal to the difference. All you have to do then is add another poison counter somehow - say, by proliferating - and that opponent is dead
Of course, this means you need a character on board that can initiate the challenge before Maid Marian gets value, but there are 11 4-cost characters that all have decent Strength values, so it isn't hard to get something down the previous turn that can take the Challenge
