|Oh my god! JC, a bomb!|
|If only Gadd gave us his Poltergust instead of freakin' coffee!|
Mario and Luigi: Superstar Saga excellently establishes its main antagonist and pays off the buildup to the final confrontation with this challenging and well-executed payoff. What makes this final battle even better is the little things to pick up on. In addition to knowing not to use up your special meter for the unwinnable first phase, extremely perceptive players will figure out that each of Cackletta's soul's hands is weak to one of the brother's elements.
Bowletta alone also introduced a lot of concepts that would be used in future games. In addition to bringing out the Koopalings after several years, she was the first in the Mario and Luigi series' tradition of the final boss being an alternate form of Bowser (if you technically count that less-epic minigame boss at the end of Partners in Time as that game's final one).
As mentioned before, it's also the first time you go inside Bowser's body before the third Mario and Luigi game used it as a primary setting.
Out of all the Mario and Luigi games that have come out on stronger systems, Superstar Saga is still my favorite one, and this final battle is a major contributing factor.
But that's enough Witch slaying. Starting with #8 we're going to start seeing battles against foes in higher powers.