This episode is a great example of what I think this show did better than the original X-Men series. In the old show outside of the core team, only a few other characters were given decent attention. But here, on evolution, I feel they do a great job of teaching me more about the mutants in the X-Men world. The Scarlet Witch is here!
Besides the usual formula of "new baddie on the loose, let's go stop her," comes the fact that Mystique has returned to the Brotherhood, Wanda is reunited with her brother Quicksilver, and most importantly, she almost single-handledly whoops all the X-Men's butts! Our heroes technically suffer their first defeat, and boom that's how it ends. Different. (and cool)