Mind stone is my favorite stone in the game, but the stone is only as good as your supers.
I was using Hawkeye/Strider mind stone day 1 but the team doesnt have enough fire power or synergy. Iām still trying to find another partner with strider using mind stone. So far, Iām thinking Nova but not too sure how much synergy does nova and strider have together. I saw a match or two with Marvelo using Nova/Strider with mind stone during week one but he didnt stick with that team.
Here is a list of all the characters that could use potentially use the mind stone well.
Arthur: probably the best user of the mind stone. he gets gold armor for a super long duration. goddess bracelet is safe and good for lockdown. he has one of the few non cinematic level 3s (great for happy birthdays). you can build 3 bars, level 3, then tag in your partner into another level 3. he has a dp and since he can jump cancel the recovery on his projectiles, he doesnt need the surge of the other stones to protect him.
Strider: orbs orbs orbs. this super forces your opponent to play your game. you can still build meter with mind storm and orbs on at the same time. against stray and hard to convert hits, he can just just air super during orbs. normally it wouldnāt be worth the meter but with the mind storm on, might as well use it. this is most likely his best stone.
Nova: gets more powerful when he has more meter. supernova is invincible and also locks down the opponent. beam super also locks down the opponent. imo, his second best stone. reality is the first.
Dormammu: mind stone helps him gets a lot of stalking flares. however, i think reality stone works better overall in protecting his hide. He is still big and sluggish.
Zero: not really his best stone, but his supers are amazingly good. tornado super is invincible and locks the opponent down. sougenmu doesnt need to be mentioned and his level 3 is also non cinematic. I think space is his best stone (lightning + space storm is oppressive), but Zero works well with any stone.
Gamora: guns shuts down 80% of the cast already so she doesnt need to rely on surges as much. she also has an invincible level 1 that has a long duration and a shadow super.
X: Armor of Light makes his buster and charged shot super a lot better. he might be better off with other stones.
Chris: grenade launcher is one of his redeeming qualities and his level 3 is one of the few non cinematic ones. reality still might be better though.
Monster Hunter: all 3 of her supers are great. qcf+2p (sorry, forgot the name) is nearly instant, covers a huge range and invincible. qcb+2p locks down and also puts her in demon mode. qcf+2k is another lockdown super.
Dante: million dollars lockdown + install super. this character works with anything and anyone.
Morrigan: i have no idea how good her supers are but she has an install super. not sure is her shadow servant invincible in this game.
Chun: kick super might be invincible (not too sure) and locks down, kikosho also locks down.
Hawkeye: Gimlet into tag combos as mentioned before. other stones are more useful overall for Hawkeye though.