You get all of the benefits of the previous levels, plus the fun of having your name (or username of your choice) recorded in the description box of every MyGrowthRings video going forward, while you maintain this level of support. Yes, this is mostly a money grab, so my advice is that NO ONE should join at this level, but if you have more dollars than sense I'll be happy to put your financial support directly into future channel content and channel member give-aways.
BTW, the name of this level is a play on the Latin phrase magna cum laude, meaning "with great honor" and a throwback to the old Shopsmith "Magna Dado" wobble dado. Yes, it's silly.