Oh, and since its not technically hexproof that youre giving, you can target your opponents creatures to prevent them from targeting their own creatures with spells or abilities
In Modern, Alpine Moon has the advantage of coming down two full turns earlier than Blood Moon (one of the problems with Blood Moon is that if you are on the draw and don't have any fast mana, your opponent can assemble Tron and play Karn Liberated before Blood Moon even hits the battlefield), although the combination of Blood Moon and now Damping Sphere means there is suddenly a lot of competition for the "hate on Tron" sideboard slot
They are playable right out of the box and while they benefit from upgrades, they aren't necessary for them to function, unlike other certain Precons
With all your mana tapped, you can lure your opponent into a false sense of security
I guess thats going to figure into peoples games
I personally love Mewtwo-EX because of its iconic artwork and legacy status