Whether you are opening booster packs, building a tournament deck, collecting Charizard cards, or organizing thousands of cards in a binder, understanding Pokmon card measurements is an important part of the hobby
The Best Bulk from Tarkir: Dragonstorm | Part 1 Bulk Up
That is also the reason that the back stayed unchanged during the 8th Edition revision of the card frame
Maybe Pokemon Company was trying to unify the House Style more strictly around then, just like Magic the Gathering started doing around the early 10s
Whatever the reason for the current interest in this and similar cards, theres not enough supply to absorb the demand
Since the new ETBs check for which mana was spent to cast the elemental, any other way of adding it to the battlefield (short of bouncing/airbending and recasting it) straight up cant trigger the effects