It's a prominent tool in Lotus Field combo decks in the format where it usually fetches the decks wincons Approach of the Second Sun or Omniscience
While not all decks are going to be super interested in copying their Commander, if youre playing one who has abilities and effects that stack well together, Double Major should be an automatic inclusion
Like most Magic: The Gathering cards, the value of Corroding Dragonstorm depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Tarkir: Dragonstorm)
Most of the time it means that the sheet (or blades) are in the wrong position when the cards are cut, but I've heard the term used for errors caused by using the wrong type of blades as well (like the Alpha-cut 4th Edition cards, or square cornered cards)
its easy to see why this card is a popular one, even aside from its lovely artwork