ADC and Support have near the same level of tankiness. Would Ashe work as a good support considering she would have a utility slow which can be buffed by her q,frozen mallet and rylais crystal scepter as well as her ult stun?
League-of-legends – Is a Support Ashe viable
league-of-legends
Related Solutions
The following champions are considered support champions, in the sense that they will either heal/shield an ally and/or buff their armor/magic resist/movement speed.
Janna excels in supporting teams.
She has many support abilities:
Howling Gale which launches enemies into the air in a line.
Eye of the Storm shields an ally for a determined amount of damage and gives a damage buff, and it is the only shield capable of protecting turrets.
Moonsoon is a teamfight changer ability as it aoe heals your team and blows away enemies in Janna's ability ratio
Janna as also a natural passive that is buffs the movement speed of your whole team.
Tailwind grants 3% move speed buff!
Karma can contribute with great magic damage bursts. Additionally, she has a single target movement speed buff. Karma is a special support champ in the sense that she does not posses an ultimate ability per se, but her ult, Mantra, gives her a bonus effect on all of her other 3 spells:
Heavenly Wave + 
Mantra = AOE Heal in a cone in front of Karma
Spirit Bond + Mantra = Single Target Move Speed Buff x 2
Soul Shield + Mantra = Very High Scaling shield + Aoe Magic Damage around the shield bearer, in my opinion her best ability of all.
Kayle makes an ally invulnerable to all damage for 2-3 seconds! Additionally, she heals allies and slows enemies, making her a very nice support pick. Unlike Janna and Karma which build defensive and AP items, Kayle builds Hybrid items like Hextech Gunblade and Guinsoo RageBlade.
For a quick overview of her abilities:
Divine Blessing heals up an ally and grants a movement speed bonus.
Intervention grants invulnerability for 2-3 seconds, which can completely alter the course of a team battle if used well.
Lux is considered a support/mage. She can tear up teams with her chain of abilities, possesses a 2 unit root, AoE slow, and an amazing Ultimate.
Additionally, her main supporting ability is:
Prismatic Barrier shields an ally for damage.
Morgana is just like Lux in that she is a support/mage. However, she is considered a better support for the shield she grants:
Black Shield is a very unique shield that blocks magic damage and any negative effects: all snares, silences, blinds, etc. This shield scales with 80% of her total ability power. It is a total carry protector and game changer skill.
Additionally, Morgana has a single target root, a magic resistance debuff AoE DoT, and a powerful AoE stun.
I mean, is Sona good for help?
Sona is the queen of support in my opinion, closely followed by Soraka. All her abilities except for the ultimate give your teammates a buff and she can not be ignored damage wise.
Hymn of Valor is an aura granting a buff to damage and ability power. 
Aria of Perseverance is an aura that increases armor and magic resist to allies. On cast, it will heal the most wounded ally nearby. The Powerchord bonus decreases total damage output of the target by 20%
Song of Celerity gives a temporary movement speed buff to your allies, in addition to the aura which grants a fixed movement speed bonus!
Can we count Soraka and why?
Soraka is one of the oldest support champions, and one of the most powerful ones. She has a single target heal plus armor buff and the ability to grant mana to an ally.
Astral Bleesing heals for a decent amount while granting 20-80.
Infuse grants mana to an ally. No other hero can boast an ability like this.
Wish is a global heal. The epitome of an incredible support heal.
Consecration, her passive, increases magic resistance for nearby allies by 16.
Is Taric a tank, or a good support champion?
He can be both. Taric's base armor and health and armor/level and health/level increase are very high compared to all other support champs.
Taric can heal and has an Armor Aura, Damage Aura, and a Stun, which makes him a reliable support character. However, one of his downsides is being a melee character unlike many of the others mentioned.
Imbue, if casted on an ally, heals Taric and your ally. If casted on Taric, he heals himself an additional 40%.
Shatter is an aura that increases allies' armor by 10-30 and increases Taric's by double this amount!
Radiance heals Taric by an amount per second while granting an aura that increases attack damage by 15-45 (and double that on Taric). Make sure to use while taking down towers and in team fights!
Zilean is an amazing support champ with the unique ability to revive champions.
He is a great addition to a team because he posseses:
Time Warp is a single target Speed Buff/Debuff
Chronoshift revives a fallen enemy with scaling (200% of AP) restored HP and Mana. That's like fighting a 5.5 vs 5 :)
Heightened Learning, his amazing passive, gives all allies an 8% bonus to experience gained!
As you can see, LoL offers you a wide variety of support champions to play.
Which champions are viable to play nowadays on LoL as support?
Depends completely, for instance:
Your team has an AP carry, AD Carry, a tank and a Beefy Meat Shield champ, what are you lacking? Since you already have an AP carry you can play a pure support champion like Taric, Janna, Soraka or Zilean.
Now if your team has already a Tank, an AD carry and a Jungler, your team will need some magic damage source, then playing Morgana, Lux or Sona will make the team composition solid.
If you want a current metagame opinion on which are the most played support champions, I would say Sona, Karma and Zilean.
Almost every champion in League of legends can play every role.
BUT they are not viable in all those roles.
What can Leona do?
Leona is GREAT for tank and GREAT Support roles. You can make a huge difference in the game if you are playing one of those two roles as Leona.
Can she Jungle or AP Carry?
Yes she can. But she shouldn't be doing it.
I'll not make too much enforce in showing you the right way to do the Jungle or the AP. But here some information any way =)
How to Jungle as Leona (This is a little out of date, but gives you the general idea)
Compilation of AP Leona
But why this is not a good idea?
She does an amazing damage? YES She does, and if you play Leona as an AP, she will wreak havoc, if you play her as jungle you will clear and gank really fine, even as an AD carry Leona. But, she is not mastered this way, because she loses for others AP like Annie and Brand for example. so is better you play AP Brand, and play Support/Tank Leona for real and play for fun AP Leona.
Here good guide for tank leona e for support leona.
Related Topic
- League-of-legends – the precedence of Guardian Angel compared to other revive effects
- League-of-legends – is GP10 still a viable choice as support
- League-of-legends – Lee-Sin Jungle build
- League-of-legends – a safe high elo counter to Leona if Thresh and Lulu are banned
- League-of-legends – Why not ADC Nami
- League-of-legends – Why do ADCs always go for damage over armor
- League-of-legends – Sejuani vs Leona Support
- League-of-legends – Why does nunu stay hidden after he completes channeling and deals damage with his ultimate/
Best Answer
My opinion on this is that Ashe would make a bad support. By support I talk about one going full support, i.e. relying on passive gold, masteries, GP/10 items as a way to grab gold, and a champion that is here for the sole purpose of enabling an ADC to grow in power.
Why is this? Because her kit is made to deal damage over utility. Of course, she has a nice slow, but she lacks a real crowd control ability to mitigate the other ADC damage. If you take other supports, Lulu Thresh and Janna have a shield, Sona has the Z (W, on US keyboards) power chord that decreases the target's damage, Soraka Sona Taric and Nami have heals, Taric Lulu Thresh and Leona have stuns that stop the ADC from attacking.
In what way can Ashe compete in this area? Ok, her ult can stun, I'll grant you this. But this comes with a huge cooldown. Basically, if the other team attacks, you can only not lose by doing more damage and killing them.
Second point, the squishiness of supports are usually well addressed by their kit in late game. Shields, heals or armour boost grow with the champion level. Ashe doesn't have any of this. So, unless you buy armour and health, you will still be squishy.
Third, all support champions have some small way to boost their ADC on other characteristics like: attack speed, movement speed, AD, AP. Ashe has none of these.
However, this does not mean that Ashe would be a bad pick for the second bot-laner. But then you can't really say you are playing her as a support. If your objective is to completely overwhelm the other team and force them to hug their tower, this may be a good pick.
Edit: On the slow component I did not talk about
First of all, we need to read this on wikia and Ashe's page as well.
Ashe's Frost Shot slow cannot be buffed by either Frozen Mallet nor Rylai's Scepter as her Frost Shot does not proc on hit effects. Only her AoE slow can be stacked with Rylai's (as Frozen Mallet is for AA only).
So it is really not a good idea to build Frozen Mallet on Ashe in any cases. Rylai's Crystal Scepter... hum 2900 gold for 80AP and 500 health? What will Ashe do with 80 AP anyway? A Randuin's Omen would be far more interesting for her.
And final thought: does Ashe really need a boost to her slow? Really?