WizKids gets a bit magical with this preview for the upcoming Yu-Gi-Oh HeroClix set. They've posted up the preview for the Magician of Faith and the Witch of the Black Forest. While neither are going to be figures that draw all the attention on the tabletop, just leaving them alone isn't really the best idea, either.
The Magician of Faith is great for some board control. Bringing some Stealth, Super Senses, and Probability Control to the table, plus Penetrating/Psychic Blast, she can sit back and pluck away at enemy pieces. Also, if she hits an opponent that has just one action token on them, she gives them another. Along with that, whenever she's hit but not taken out, she can return a spell back to your hand. Talk about a handy ability... sorry for that pun.
Meanwhile, the Witch of the Black Forest you'll want to keep close to your other pieces and put her in harm's way. Why? Because when she shuffles off this miniatures game coil, she'll take Action Tokens with her from adjacent friendly figures. And with Phasing/Teleport, she doesn't have much trouble going where you need her to go to get in the way.