Imagine, if you will, the text box of Skithiryx, the Blight Dragon with the body of a Titanoth Rex, or the mass of Lord of Extinction paired with the keyword soup of Tyrranax Rex
Simply pick a commander, select your theme, and get building
A strong plastic or felt deck box can help protect them from bludgeoning or physical damage when youre traveling with them
You also have a lot of other options if you want to play Commander, so the choice here depends on your budget
Its a nice effect on the left door, especially if you have a good 1-drop to play, then the more expensive right door is a way to win the game, providing your board manages to dodge a Sunfall