Complex sentence: Recovering from the initial attacks, the X-Men force the Sisterhood (now including a brainwashed Psylocke) to retreat, but the entire battle was only a distraction, as the real purpose was for Madelyne to locate Jean Grey's gravesite.
Split into simpler sentences: Recovering from the initial attacks, the X-Men force the Sisterhood (now including a brainwashed Psylocke) to retreat. But the battle was only a distraction, as the real purpose was for Madelyne to locate Jean Grey's gravesite.