I have got a lot of PMs and posts in my old topic asking for me to update it for M'arrillian Invasion. So I am going to start posting updated sections for each tribe.
Even after the latest set, the two biggest characteristics of the Overworld tribe is their support ability and healing. You will rarely see any offensive card from this tribe. They rather strengthen themselves to win rather than try to undermine their opponents with stat reduction or damage dealing effects. With M'arrillian Invasion, a greater theme of stats has emerged in the tribes, and of course Overworld is full of stat increasing mugic and abilities.
Overworlders are problem solvers. They don't have much in terms of prevention, but they can easily remedy problems that come up. If someone is hurt, they heal them, if someone loses their stats, they increase them, or in Tangath Toborn's case, he just undos the effect of stat reduction.
One thing I am noticing with latest set is that each tribe is skilled in almost all of the elements except for one, instead of being skilled in one or two like I posted in the original article. Overworlders have a weakness with the Air element.
Please comment, criticize, or just a friendly hello :).