Margie picked up the Magic Booster Packs for each of us as a late anniversary gift. Aside from some very pretty outfit pieces, one of the coolest things it included is the ability to do a costume change with a resulting special effect: casting a spell, calling down a flash of lightning, a smoky presto-chango, and a Wonder Woman-like spin. It shows up as an option on the costume screen, so any change follows the emote.
These can also be done as a macro, with the /cce command. Notes are here.
There’s also a new “Mystic Fortune” power you get, which lets you do a tarot-like reading that generates a fairly nice set of non-stackable buffs (mostly) on someone for 20 minutes. It’s actually something worth keeping an eye on and using on your team. Inappropriate for non-magic characters — but valuable enough to use anyway.