He has spent time with the New Jersey Devils and Toronto Maple Leafs over the past six seasons, accumulating 17 points (3G, 14A), 204 penalty minutes, and a plus 12 rating in 162 career NHL games.
Fraser was originally selected by New Jersey in the 3rd round, 84th overall in the 2005 NHL Entry Draft.
Abney, 22, was Edmonton's third-round selection, 82nd overall, in the 2009 NHL Entry Draft.
Hartikainen, 23, was the Oilers' sixth-round selection, 163th overall, in the 2008 NHL Entry Draft. He has played in 52 career NHL games over three different seasons with Edmonton and has six career goals and seven assists with 16 minutes in penalties.
Currently with Ufa Salavat Yulayev of the KHL, the left-winger has collected 13 goals and 14 assists in 43 KHL games in 2013-14.