You can either build around a legendary creature and try to find cards that will complement this creatures abilities (referred as top-down building) or you can build around a mechanic/theme or combination of both that you find interesting and search for a Commander that will best fit to lead the deck (referred as bottom-up building)
Ironically, Vivi's Persistence synergizes incredibly well with Kuja, Genome Sorcerer , Magic's version of the main antagonist of Final Fantasy IX, as both cards care about generating 0/1 Wizard tokens
Keep an Eye Out for Dragon's Eye Lands Gaze upon the majesty of Tarkir's dragons
In that regard, the commander most analogous to Blech, Loafing Pest is actually Linden, the Steadfast Queen, of all creatures
While other brands like Dragon Shield do offer Japanese-style versions of their outer sleeves, the Katana is the best bang for your buck
When you organize your collection with the right supplies, you keep cards in better condition