The Edmonton Oilers have made several big moves at the trade deadline throughout their history, but which ones had the most impact?

Although the Detroit Red Wings and Edmonton Oilers are in very different circumstances, they could have similar needs before the NHL trade deadline.

A goalie? A top defenceman? A winger? A centre? Two credible NHL insiders, former GMs Brian Lawton and Craig MacTavish, agree that the one area where the Oilers most have to pick up their play is on defence.

Perhaps the most attractive acquisition target for Edmonton at the deadline is Karel Vejmelka of the Utah Hockey Club. His cap hit ($2.725 million) is workable, and he’s unrestricted this summer (meaning there is no worry about impacting next year’s cap hit).

NHL Trade Deadline is one month away. And the Edmonton Oilers are one team likely to make a move before the buzzer sounds at 3 PM Eastern on March 7th. Edmonton has already made one intriguing move, albeit a signing.

The Oilers have hit their stride after a bumpy start, but there's still room to add. What's on the list beyond defensive depth?