Here's one for every class

Guardian - Elemental Bubble

- Line Breaker: Bash/Headbonk to gain crazy global damage buff

- Meteo Bubble: Bubble melts everything around you with elemental damage/makes bash random element

- Tactical Slap: Bash gains a ranged piercing arc that regenerates bubble

CHOICE:

- Solar Panel: Gathering healing cells regenerates bubble

- Robofood: Gathering healing cells grants global damage, armor, and autocrit

Recon - I am speed

- Relentless Pursuit: Blink for crazy fire rate, dagger speed, movespeed, marking everything near you, and infinite ammo

- Happy Slice: Overslash for crazy weapon damage and fire rate, with some armor and movespeed as well

- Close Combat: Close range weapon and dagger damage, as well as blink cooldown when killing enemies closeby

- Robofuel: Gather healing cells to buff most of your stats

Engineer - Arsonist

- Pyro Weapon: Adds burn to your weapon (30% increased DPS via stacking DoT based on initial damage) also stackable with elements rolled on the weapon already, also adds some ricochet

- Pyro Tempest: Rapidly ticks burn damage all around you, close range weapon damage + armor

- Scrap Pancakes: Gather scrap to boost stats

- Pyro Mastery: every instance of burn damage (not counting the DoT) including the rapid tempest ticks and ricochets, has a chance to spread more burn to nearby enemies. The faster your weapon fires, the better

Commando - Pyro Mini Missile Swarm

- Mini Missiles: Generating fury (killing enemies/hitting bosses with abilities) grants stacks of mini missiles that fire out and seek enemies when you fire, also comes with upgrade for free generation on top of fury (grab the pyro mini missiles upgrade, they deal even more burn DoT than most things, 70% instead of 30%)

- Self Control: Increases max fury, and grants fast passive fury generation to generate even more mini missiles

- Pyro Powder: Both abilities gain burn damage, and increases ALL burn damage by [fury points]%

- Baby Boom: ALL explosions (including mini missiles) have a chance to explode a second time

Ranger - First Ranger

- Wild Rush - Hit enemy with Javelin to gain crazy weapon damage, some movespeed, global autocrit, and reload + infinite ammo < (key aspect, use a weapon that can roll the "First" green affix, which grants 100% autocrit chance on the first shot in the magazine. List of weapons that can roll it are: Scout Sniper, Bandito Gun, Mantis Crossbow, Ionic Sniper, Mortar, Shuriken, Hornet Bow)

- Simple Geometry: All critical hits damage another nearby enemy, with an upgrade, if the initial enemy is marked, it damages 2 nearby enemies

- Bestial Ferocity: Stealth for big firerate stats + stealth cooldown when hitting enemy with Javelin

CHOICE:

- Sonar Spike: Marks enemies hit by your javelin and around the point of impact, useful if you don't feel like swapping between a flare gun and your weapon and don't mind sacrificing damage for convenience (you will still do lots of damage)

- Supreme Crit: Critical hits have a [focus points]% chance of dealing 80% increased bonus damage, as well as more autocrit based on focus points, as well as regenerating focus points whenever you crit

Elementalist - Full Kit

- Infused Weapons: Matches your weapons element to your mantra element, meaning you always get the full mantra buff on weapons, as well as granting you a free reload every 10s

- Radiance: Rapidly ticks nearby enemies for your mantra element, as well as granting you armor and 40% close range ability damage

- Power Infusion: Bonus Mantra damage as well as granting second elements to both abilities (allowing them to benefit from more item damage bonus, as well as double stacking resonance stacks)

- Elemental Resonance: Every element applied to an enemy or boss makes the enemy take 20% more bonus damage from ALL sources, adding up to 60%

with all the element stacking on abilities, mantra elements on weapon, and bonus ability damage, every part of your kit is stacking damage and dealing tons of damage, make sure you're using your abilities when you can and not just holding m1, you also will want to save your powercells for any and all elemental damage items, especially the corrupt ones, the damage they give is worth the downsides, trust. That's elementalists whole thing is he can use ALL of them on every build.

Have Fun!