These were among the notable players moved before the NHL trade deadline Wednesday.
Columbus completed three deals, including one acquiring Gaborik from the New York Rangers for three players. Columbus (15-14-7) sits 11th in a tightly packed race for the Western Conference's eighth and final playoff spot.
Buffalo completed its fourth trade in three weeks by trading Pominville to Minnesota in exchange for goalie Matt Hackett and forward Johan Larsson.
Conacher, second in the NHL rookie scoring race, was traded by Tampa Bay to Ottawa for goalie Ben Bishop.
I first met him when I was 19 years old and he coached me for 13 consecutive years. I don't know how many athletes who have had that pleasure. Al Arbour was a man that left us not only feeling like champions, but left us with a lot of great memories that we can carry on through life.
— Islanders Hall of Fame defenseman Denis Potvin on former coach Al Arbour, who passed away Friday at the age of 82