There’s much pleasure to be gained from power, or so the folks on OWN’s scintillating summer sudser, AMBITIONS, maintain. The series, which premieres Tuesday, June 18, at 10 p.m. EST, stars Robin Givens (ex-Dr. Phillips, THE BOLD & THE BEAUTIFUL) as attorney Stephanie Carlisle Lancaster, who happens to be both the wife of Atlanta’s mayor, Evan Lancaster, and the daughter of Stephen Carlisle, whose prestigious law firm she’s jonesing to take over. But first, she needs to prove herself by managing a high-profile case against the pharmaceutical company owned by her father’s longtime nemesis, Hunter Purifoy. “Stephanie is powerful, educated, smart and willing to lead,” Givens offers. “She’s both a dame and a broad… She could drink and play poker with the boys if she had to but also look…