remove implication mega_mewtwo_x (74) -> legendary_pokemon (57827)
remove implication mega_mewtwo_y (419) -> legendary_pokemon (57827)
create implication mega_mewtwo (464) -> legendary_pokemon (57827)
create implication mega_latias (52) -> legendary_pokemon (57827)
create implication mega_latios (35) -> legendary_pokemon (57827)