Both Builds are Mid-Late Game Builds

This means that Catherine is more prevalent during Mid and Late game, until she gets Clock Work and Aftershock, she doesn't do much more than support her team. This is not to say that she is useless early game, but her cooldown isn't very good at that point, meaning her bubble can't be activated as often and her stun isn't always around.

This is like any protector that decides to become more of a damage dealer.

CP JG Catherine

Yeah. It is actually possible, as some people might have found out.
Catherine remains one of the most tanky as heck heroes in Vainglory once she puts on that wonderful Stormguard Ability.
Now imagine that you can just spam that ability every few seconds.
While that ability is down you stun the enemy and pop your Stormguard again.

General Notes

My build is inspired off of the Reccommended Build for her, but its not exactly the same.
Although Catherine only has one real defensive item on her; Fountain of Renewal, her boots give her some health, cooldown and energy as well.
Don't forget that stunning or silencing someone gives Catherine 1 armor and shield.
That may not seem like much, but when you stun the enemy team a ton of times, you'll see a significant difference. (See the image above in "Build Guide Notes and News", WP JG Ranked Catherine Testing.)

The main point of this rather unorthodox build is focused highly on her Cooldown Reduction on Stormguard, since it allows her to survive almost anything.
Its akin to a longer Reflex Block, but it does a small range of AOE damage and reflects damage done to you to enemies.
The only downside is that small instances of damage, and debuffs go through.
Turret fire also goes through it.
(Skye's Forward Barrage, Phinn's Quibble, Ringo's Hellfire Brew, etc.)
Most of the time, once you activate that Stormguard, you are nearly invincible.
Getting attacked reduces the Active Time that Stormguard is up, but you reflect that damage back to them and you're still stunning them into oblivion.
Your main damage comes from your Stun, but this build lets Stormguard deal a more damage and overdrive sit. The CP boosts it up by a 50% CP Ratio.

Items:

Aftershock Aftershock | Category: Ability | Tier: 3 | Cost: 2400 After using an ability, your next basic attack deals 15% of your target's max health as damage with +50% lifesteal. Max 400 damage vs non-heroes. 1.5 second cooldown. +25% Cooldown Speed +2.4 Energy Recharge +35 Crystal Power (Very effective against enemies with high health.)

Aftershock is highly amazing.
It gives cooldown and okay-ish Crystal power.
Turrets melt when hit by its Proc, and so do enemy heroes.
Since the Proc has a 1.5 cooldown, you can spam around 4-5 in a team fight if you time it correctly and have low cooldown.

Clockwork Clockwork | Category: Ability | Tier: 3 | Cost: 1950 Passive: Amplify Crystal Power by 30%. +40% Cooldown Speed +250 Max Energy +7.4 Energy Recharge (Cooldown acceleration increases the speed at which your abilities come off the timer.)

It has huge Energy Recharge properties and Max Energy Increase.
Somewhat like a Tornando Trigger for abilities, once you get this item, abilities can be spammed.
For Catherine, enemies are generally going to have a harder time running away.
Couple this with Aftershock and immense amounts of damage will follow.
In 1.22, there is a Crystal Amplifier in effect, so your tiny 35 CP will be 45CP.
Adding on Broken Myth will up it to 136 CP.
A full build of Broken Myth

Fountain of Renewal Fountain of Renewal | Category: Defense | Tier: 3 | Cost: 2300 Passive: Lifespring Active: Heals you and nearby allies for 2 health for each % missing health per second for 3 seconds. (60s cooldown) +200 Max Health +75 Shield +30 Armor (Heal is especially powerful on allies who are almost dead.)

The only real defensive item Catherine needs to survive most engagements.
Also great for supporting allies as well, since having two of them (your Roamer will probably build one. If not... well, don't really know what to tell you) on your team lets you do clutch plays and heal your team decently. Try not to activate them at the same time.
Like seriously. Don't. Activate. At. Same. Time.
If you do, you're dead to me.
(Or at least, dead in-game)
And once your Captain of the Guard Perk starts building up, you'll quickly see why I don't really get any other items for defense.

Journey Boots Journey Boot(s?) | Category: Utility | Tier: 3 | Cost: 1900 Passive: +0.5 move speed; +1 additional speed outside of combat. Activate: Sprint for 2 seconds (30s cooldown). +300 Max Health +8 Health Regeneration +25 Armor +25 Shield Note: Boots do not stack. (Even though you need two boots to wear them correct)

...
Boots help you move faster.
Even if you fly.
Or don't wear shoes.
Or don't even have feet.
And even if you only get half of the pair.
What more do you want?
It's a boot.
(Serious notes: If an enemy gets away from you when you try to stun, activate your boots. You'll rocket toward them. It's quite stunning how well this combo works).
(._.)
THAT JOKE WAS MADE.

Alternating Current Alternating Current | Category: Ability | Tier: 3 | Cost: 2800 Every other basic attack deals 70% of your crystal power as bonus damage. +60 crystal power +65% attack speed (Helps you deal consistent damage after you've built enough crystal power.)

This lets you deal the Crystal damage you have every other hit.
By itself it does 42 CP Damage every other hit.
Said CP damage also triggers Broken Myth's Passive.
It's just really awesome as well when you manage to get stun with Aftershock and Alternating Current Procs, and also with Stormguard up.
Don't forget that Merciless Pursuit does CP Damage as well.
So 5 Sources of CP damage from:
Merciless Pursuit
Stormguard
Stormguard Reflection Bubbles (Exc. if you're not being attacked)
Aftershock Proc
Alternating Current Proc
All the while Broken Myth is building up its stacks.
Ouch.
So 20% to 30% of one targets Max Health goes right down the drain.
(From Roamer to Laner health)

Broken Myth Broken Myth | Category: Ability | Tier: 3 | Cost: 3100 Passive: Amplify all crystal damage by 7% for each second you are in combat against heroes. After 5 seconds, you lose a stack each second. Max 5 stacks. +10% Shield Pierce +70 Crystal Power (Helps your abilities deal more damage, especially against enemies with high shield.)

Amplifies Crstal Damage AND has Shield Pierce.
That means your AC will have more damage on it.
Not sure if Aftershock gets an increase of power though.
Ouch.

WP JG Catherine

This build gives Catherine that extra "oomph" to her Stun and Basic Attacks.
Her stun will much more damage than it would CP, since her damage on her basic attack also adds onto it.
Her stun also lets her lock a target down, giving her time to do more damage.

General Notes

WIP

Picking Catherine

Picking Catherine as JG will make players raise their eyebrows in shock or confusion.
Its to be expected after all, due to her seemingly low damage.

Solo Queue

Casual:
If its solo queue you'll have a low chance of getting that position, since most people will write that off as you being crazy or unskilled/having no idea what youre doing.
If you manage to get that position, just know that you're not neccassarily out for blood until mid game.

Ranked:
Pretty much the same as Casual.
Now, if you have been in higher ELO or still are, (The Hotness and above), you've probably been in a lot of Draft Pick matches.
If you are one of first picks, you'll be able to lock in Catherine if you call your position before you start banning/ during banning.
Make sure you choose the right position, of course.

Triple or Duo Queue

Just call out your position and who you want to play.
As simple as that.
(Most of the time.)
(Catherine Roam is still super fun to play)

Ability Usages (Covers both Roam and JG positions)

Merciless Pursuit

Essentially your main damage ability, with Stormguard being more of a defensive ability.
It stuns people for an amount of time.
Overdriving the ability gives a boost to it in terms of damage, but most importantly, the amount the target is stunned.
At Rank 4, it stuns for 1 Second, at Rank 5 (Max Rank) it stuns for 1.2 Seconds. Not that big of a difference, but it can certainly change the game significantly.
But, that is mainly based on if you know how and when to stun a target.

M.P. can also let you escape, since it gives you a burst of much needed speed, and if that fails after using up said speed, you simply turn around and stun if you have the stun up, since the speed runs out before the stun proc.

What I mainly use the stun for, is for those people with the crazy team fight changing abilities.
This means:
Celeste's Solar Storm
Taka's super short X-Retsu channel
Kestrel's One Shot One Kill
Ardan's Gauntlet
Adagio's Verse of Judgement
Ringo's annoying Hellfire Brew
Catherine's Blast Tremor (If you're in Casual, or lower ELO ranked)
SAW's Suppressing Fire
Joule's Red Button
Krul's super super short Hell Razor animation
Vox's even shorter Wait For It animation
Rona's Red Mist
Skaarf's Dragon Breath
and maybe Fortress's Attack Of The Pack.

I am not entirely sure about some of the super short animation Ultimates, since those require crazy amounts of skill/luck and timing to interrupt.
I am sure of the Taka one though, since I main him.

Other than that.
Wait a second before you stun, because some players are skilled enough to notice you making a beeline towards them.
In that case, they will activate reflex block.
Waiting for that second will let you stun them after the active wears off.
This is when you "shut them up".

More coming soon...

When that Ardan appears..

In higher ELO most of the time, people will pick Ardan over Catherine.
This is because most people are now more used to the game, and can effectively do more damage with him than Cath.
Ardan is your main "rival" should he appear.
He is basically your opposite, in terms of Roaming.
Ardan is more Offensive, Cath is more Defensive.
He stuns in a perimeter, Cath stuns one target.
He can protect teammates better with Vanguard, Cath stuns high danger enemies.
His gap closer, Blood for Blood, is on a "lower" Cooldown, since basic attacks reduce it.
Said gap closer also resets his basic attack animation, letting him deal two instances of True damage in a short amount of time. There is also the weapon damage and crystal damage to deal with as well.
This all lets him trade blows well with Cath, should it ever come down to a 1 v 1 fight.
He is more dangerous while both of you are in Roam (not the city).
Should he carry an offense item, you really want to watch out.
However, its not to say you can't beat him.
If he has high health, your Aftershock will tear through him, coupled it your high Cooldown and Stormguard, you'll fare well.

When he tries to use The Gauntlet, stun him while he is channeling, its hilarious and screws up his Cooldown on it.
It will get you out of the really sticky situation of a confined battle, especially if his team is made of melee or someone like SAW and/or Krul.
They do really well in defending/siegeing a point or locking down an enemy Hero.

5/11-13/16

Catherine Guide WIP

Disclaimer: Terrible Humor Ahead.

Pictured Below: WP JG Ranked Catherine Testing.

67 Stacks on Catherine's Perk

Catherine, Skaarf, and Phinn VS Adagio, Ardan, and Ringo.

I'm out sick

Sorry people.
This guide is still a work in progress, a lot of errors will be found and some things will be skipped over.
Sections will be incomplete, for sure.
I published it for those who have been waiting for it.
(I highly doubt anyone was personally.
:P

5/24/16

I am back, was busy updating the Taka guide.

9/20/16

Staff Pick!!!!!

I'm not sure how this seriously neglected guide got staff pick after my month's hiatus of anything Vainglory; too much schoolwork.
I'm honored to have not one, not two, but three of my guides to be featured, even crazier is that two of the featured guides are in the same week, how crazy is that!?

9/21

General Reformatting and updating to match 1.22

Pretty self-explanatory.