A review by terrorkobra
Giant-Size X-Men #1 by Dave Cockrum, John Costanza, Glynis Oliver, Gil Kane, David Cockrum, Werner Roth, Len Wein

4.0

This is when the X-men got a "breath of fresh air" with new members joining the team, iconic characters like Wolverine, Storm, Nightcrawler and Colossus.
Thunderbird, Banshee and Sunfire also join the team.