Crowd Control (MMORPG) - Ultima Online

In Ultima Online, the most common CC spells are Paralyze and Poison (although Poison is meant to be a debuff or damage over time, it also prevents a character from healing himself with certain methods). There are other CC abilities that also prevent healing as well as a spell known as Force Field, meant to block passages. Two skilled players can create a "cross" by casting Force Field along the X and Y axes of the map of the map, locking the target in place for a time much longer than Paralyze. This allows them to subsequently cast spells for a longer time without fear of retaliation from the target (unless the target can attack from afar, like archers and magical users).