>>29115061For X/Y its Eternal X and Wilting Y, no contest.
For ORAS its a bit more complicated. Rutile Ruby and Star Sapphire make it extremely difficult, if going a bit far (Flannery has a Volcanion, for example), but no other changes. Rising Ruby and Sinking Sapphire make it harder, but not as hard as Rutile/Star, on the other hand, it changes a lot of stats (see pic related for an example) and makes every pokemon available, though most legends are on the soar locations.
