If you get picked to play support, immediately pick Atlas. Hes one of the best supports there is.
Once the game starts, follow the build and leveling tree.
As Atlas, you want to play very aggressive from the very start. If you play aggressive, youll stack your Prophetic cloak very quickly.
Dont forget to combo your skills and basic attacks for huge dmg on enemy gods.
Sentinel's Gift
PASSIVE - Getting the assist for an enemy minion or jungle monster dying will provide 8 Bonus gold and restore 12 Health and 8 Mana. If you are not within 30 units of an allied god for 20 seconds this passive is disabled until you are near an allied god again. Can be upgraded at level 15.
Prophetic Cloak
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
Shogun's Kusari
AURA - Allied gods within 70 units have their Attack Speed increased by 30%.
Gladiator's Shield
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
Cyclopean Ring
PASSIVE - Your next basic attack against an enemy god deals bonus Magical Damage equal to 9% of the target's maximum Health. This effect can only occur once every 8s, reduced by 2s for each successful Basic Attack on an enemy god.
Archdruid's Fury
PASSIVE - Gain a stack (up to a max of 6) each time you take damage from enemy gods equal to 5% of your maximum Health. Your next basic attack on an enemy god consumes all stacks and deals 25 (+ 2 Per Level) Magical Damage per stack. This effect can only occur once every 10 seconds.
First you want to start with skill 3 (high dmg for early kill on camps + movement speed to lane with carry), then level your 2 skill for grabbing enemies.
Then the 1 skill for dmg, wave clearing.
After that you want to level up your 3 skill to max, then 1 and lastly 2.
When you get the chance to learn or level your ultimate, dont hesitate and level it.