Probably Psycho Boost.
Kyogre.
I would say Rayquaza or jirachi
the answer is curse & emerald Curse because it leaches health and looks cool Emerald because it has most hp and most attack points. there is the answer :)
explosion 250 power
For me I would say Me First which copy's the enemies attack but 10 times stronger!
Steven Stone is the most powerful trainer in Pokémon Emerald. He can be found in the upper area of Meteor Falls after defeating the Elite Four.
rayquaza
No, the normal form in sapphire is the most powerful
i believe its Victini's V-create which has a damage of 180
Move Tutors in the Pokemon games from the third generation on can teach the player's starter Pokemon its most powerful type move. The starter Pokemon must have maximized its friendship with the player before learning this move.
The strongest Pokemon on Pokemon emerald would probley be raquaza
RAYQUAZA