Massacre Wurm peaked at $30 and settled at $25
For four mana, two generic, one black, and one green, plus X life as an additional cost, this sorcery destroys all artifacts and creatures with a mana value equal to or less than X
"Clearly we're better equipped to design storm cards." History shows we were wrong on that, and the second wave of storm cards was also pretty powerful
Finally, it has the Welcome Return ability, which states that whenever this character quests, you may return a chosen character of yours with a cost of one to your hand (from your discard pile), and if you do, you may play a character with a cost of one ink for free
Plenty of cards from that set offer benefits based on the number of party members or even having a full party with one of each creature type