How can you say that Brion is the only possible Giant when you have Kalemne, Disciple of Iroas in the 99? Seems like a no-brainer to make her the commander if going the tribal route. Don't get me wrong, Brion makes an awesome commander (my roommate has a Brion deck that stomps face) but he has to be built around in a way that Kalemne doesn't necessarily have to--especially if Giant Tribal is the primary focus. It's possible to have Brion be the main focus and tribal be secondary but it seems inefficient to the point of falling a bit flat. YMMV

Absolutely right on Kalemne, Disciple of Iroas being a possible commander description amended. My fault for writing it at 3 am and forgot they were legendary.

As for using Kalemne, Disciple of Iroas I don't like as commander because I don't take have a lot of classic red white aggression in here. IDK if it is just a play preference thing but I like that Brion Stoutarm gives instant speed damage, allowing more strategic and defensive play. The other primary reason to go with Brion is the damage is direct. If I use Kalemne, then opponents just need a combat trick or something to dissuade attacking into (death-touch etc.), and having a sacrifice outlet open with retribution dissuades opponents from using removal on your creatures. This would require Swiftfoot Boots or something to defend Brion Stoutarm, but everyone thinks twice about messing with your other threats on the board. The life-gain doesn't hurt either even if you take some hits early.

Oh yeah. The lifegain is no joke