"Cacturne. the Scarecrow Pokemon. If a traveler is going through a desert in the thick of night, Cacturne will follow in a ragtag group. The Pokémon are biding their time, waiting for the traveler to tire and become incapable of moving. After spending thousands of years in harsh deserts, its blood transformed into the same substances as sand. It is nocturnal, so it hunts at night. "
well, a mega would seem like a fast and strong sand sweeper, but there is so much more we can do. lets elaborate on desert a bit more. flaming hot in the day, and freezing in the night, and cacturne likes the latter better. now i am not thinking ice type, which is way too much of a stretch, but I added icicle spear, icicle crash, and blizzard cause why not. also pursuit for basic dark stab, sand tomb, and spiky shield for defensive prowess. thinking of enduring blazing hot days and stalking even fast prey in cold nights, is it really a grass type? it is probably an ancient pokemon, and it probably can be even more terrifying if it did not have to deal with the extreme heat and its tiny amount of moisture. i like to think of mega evolutions as when a pokemon is at its highest potential. for cacturne, it would be stalking in the harshest conditions with no worries of moisture or the weather. so what about rain? losing a major weakness in fire, and an ability in replenish: boosts defense and spdef in rain by 2 stages on switch in, and lowers to neutral stage after 3 turns. also retains grass dark. now with coverage like this, what walls it? answer: ferrothorn, toxapex, litterally any defensive wall(minus the blobs). it is slow, so it can be revenge killed by zapdos, tornadus t, and other flying types. uturn still screws it over, and grass is just not all that viable. i wanted a unique rain mega that can be picked over swampert, and is an excellent revenge killer.
stats: hp: 70
attack: 140(+25)
def: 105(+45)
spatk: 115
spdef: 95(+35)
speed: 50(-5)