It is a similar story with Pikachu
To promote the new sets, The Pokmon Company is giving away 1,510 copies of Mew ex featuring original artwork
it cannot be used to pay for X-costs, and cant be used if youre already casting a spell for a different alternative cost such as flashback or overload (kicker still works, though youd have to pay mana for that)
Megas are Basic, Stage 1, and Stage 2 cards, and the latter two can be evolved directly from their respective Basic card or Stage 1 card
While this version was never released in Chinese sets, it was included in the Korean booster set Battle of Omni, adding to its international appeal and collector value
The addition of one extra generic mana does make me wonder if its worth running this in some of my decks though