I had a wizard that accidently became a lich, went mad, and did not know he was a lich. He had been a famous undead fighter and thought they were out to get him and holed up in his tower. He used a hat of disguise to look young, and now it mad him look living.
Well, long story short, when the party found the wizard, the rogue decided to stop any castings by GRAPPLING the lich! LOL! One paralyzed and invisible PC to go, please!
I like playing with experienced gamers.. They have so much to unlearn. . .