While we're at it, we should buff original Mega Absol and Mega Garchomp too. Since both got "Mega 2" forms, their original forms are very much lacking.
Ability: Fur Coat
Mega Absol is super lack luster, or the original version is. It wasting a ton of points in SpA it will rarely ever use. That's 40 points of its added BST. So I can definitely say it needs a strong ability, which here would be Fur Coat.
Absol in all its forms actually has the same exact physical bulk as Alolan Persian, with its Mega sharing its Speed stat. So Absol gets that effective 138~ Def, but what separates it from Persian is its untapped movepool and much higher Atk than Persian.
With Fur Coat, Absol isn't immediately KO'd by a light breeze on the physical side of things. U-turn or some uninvested Earthquake from Garchomp no longer sends Absol to an early grave. If can even pull off a Jake Paul and take punched from the elderly.
Not only are you now more easily able to use Sword Dance, but now, Calm Mind sets are an actual possibility now. Same with Wish sets as well.
Ability: Technician
As I'm writing this, I remember suggesting giving Mega Garchomp Technician to mimic the Scyther line. I'll say it again since I nearly forgot and don't know where the original post is.
Anyways, Mega Garchomp has some pretty nice options for Technician. First one people would think of being Scale Shot. You get at minimum a 75 BP Atk that also boosts your Speed, and at max would be stronger than a Choice Band Outrage. Additionally you have Dual Chop for more consistent damage rivalling Outrage without the drawback, Breaking Swipes and Dragon Tail for utility, Bulldoze to lower the opponent's Spe while hitting only slightly less than Earthquake, and Aerial Ace providing Mega Garchomp really solid coverage for its Ground type attacks.
With Technician, og Megachomp would have a serious niche that may give a reason to use it over regular Garchomp.
Honestly is fur coat even enough? It's not like alola Persian was ever a good Pokemon or even that bulky and this tier is way more power crept. I feel like fur coat isn't a big enough improvement to it's bulk to make it better than magic bounce
I want to see absol og get something to give it more of a reason to exist other than gimmicky fake outs with z (I get the logic behind it and in sure you can catch people off guard by making them think you're z when you really aren't, but honestly then what? You're just left with an inferior mega who's bulk doesn't exist and speed tier isn't high enough for its reality) but unfortunately with z having basically the same attack but better type and way better speed it's tough.
and 
,. TLDR: magearna has one billion sets and you'll often find one set that beats your whole team and ape punishes progress too hard by taking far too many hits and still being extremely threatening, and also due to the lack of checks its still broken even without tera.
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