Hey guys, here's Olorun ADC Guide (since i can't see him really great on any other role, and i'm not good at them either.
About the God

Olorun is first god of Yoruba pantheon, he's a Mage but dont get yourself tricked, he's not really good at mid! Olorun is mostly designed to be in ADC role, aka Magical hunter.
Olorun is a very strong god in lategame since he has gamechanging ultimate... oh and also he has no pressure to be honest. Due to his bad clear (has 1 clearing ability that can be blocked by a player). He can't get pressure and win lane by himself to get dominance. At least before he hits level 5, from here he can make things happen if enemy get's in dangerous position or lose his escape ability.
Detailed about ability kit
1. Focused Light

Charges projectile that pierces through minions, doesn't pierce through walls. Stops at hitting first enemy god. Longer you charge - longer it travels. Have no damage scaling for charging shot. Has really long range at max charge, you can make it even longer if you cast it in ultimate, ALSO CAN CRIT! Minimum range - 45, maximum range - 110. Maximum range with ultimate - around 200.
2. Overflown Divinity
Attack Speed steroid and Ground target aoe damage ability. After using this ability you get attack speed boos and can use it again in 10 seconds to shoot projectiles from miniature sun onto ground if you have energy meter filled more energy you got - more projectiles and more dmg. Projectiles are being shot randomly in small area, each time projectile hits enemy god damage of this ability reduces for 10% to maximum 80% reduction. , hitting your basic attacks and first ability Focused Light while attack speed boost is active makes it charge energy meter for using damaging part of this ability. It doesn' show but this ability goes on cooldown after it gets popped. And doesn't show it before you use it to deal damage, or effect expires (that takes 10 seconds)
3. Consecration
Close range knock back + heal. Olorun can knock back enemies and dealing damage in small circle around him, enemies knocked back are slowed. Also heal allies over time (including minions), on top of that Olorun gets protections for every ally god healed.
4. Sanctified Field
Olorun places barrier, in this area all enemies gets negatively affected and their movements, abilities, basic attacks, animations and effects are slowed and get affected by debuffs or buffs for a longer period of time. Olorun on other hand gets himself accelerated, his movements, basic attacks, abilities casts and shoot faster, howevever buffs or debuffs he get affected by work for shorter period of time, so beads or aegis work worse in this area.
Passive Touch of Fate
Olorun gains 5% extra scaling on basic attacks,
After getting 150 magical power he gets 15% crit chance, and 1% for every 10 power, however critical hit chance cap is 70%. Crits deal only 50% additional damage.
In Lane

As Olorun you don't want to all-in if you don't have ulti, so if you somehow wasted it, you should focus on clearing waves, maybe poking enemy, and boxing him a bit, after boxing heal yourself with 3, but since lifesteal is mandatory on most hunters, they will be most likely able to outsustain your poke. Also you don't want to all in against enemy that havent yet wasted his escape ability or something that gets him out of combat(like Rama ult, Anhur jump), since your ultimate slows everything enemy does, they get more immunity frames in leap/fly or anything else and you will just waste your ult. (Want to mention - it seems like Olorun's ult doesn't make Chernobog's 3 work longer while he's in the wall)... Also want to mention that Olorun's ult makes enemy actives work longer(aegis) and your actives end faster (beads/aegis/sprint etc)
Since Olorun doesn't have escape and his self-peel can be outplayed - Ultimate has realy long placement time and enemy that are somewhat far away from olorun can outrun ulti and run out of it, and his 3 is melee range knock back.
In Teamfight

Since you have no escape and good self-peel, you should be focusing on being close to support and taking safe spot in backline, wait for enemies to use their big ultis or use your ulti when your teammates engage. Your ulti can CHANGE THE GAME TREMENDOUSLY. And it means it both - win your game... or lose. Focus on auto-attacking enemies that got CCd in your ult. Dont waste time on casting your 1. But you can use your 2 tho, it makes shoot these "sun-rockets?!" faster. Any knock-up or knock-back will last forever in your ult(including your 3), your enemies will be doomed if they get susano/sylvanus ulted.
When you shouldn't use your ult.
You must be very patient when you play against gods with big CC channeling abilities, like Kuzenbo's Ult, or 3, or Xing Tian's ult. Playing against comps with these kind of gods that control your teammates while channeling is going to be really annoying to you. You'll have to wait till they waste these kind of ults, otherwise you can pretty much destroy your own teammates because they'll get Xing Tian's ulted for eternity.
When you should use your ult.
You should ult when enemies are clearly all in and can't disengage and run out of fight, because if 2 tanks show up on your face, you ult and then they suddenly just run away while your ult is being casted will make you just waste your BIG gamechanging ability with extremly long cooldown. However, it doesn't mean that you have to sit in backline and wait till they kill all your frontline to make sure they dont run away. You can cooperate with teammates that can engage with some form of gap closer like blink, leap or something else. And ult for them before they make that big 4 men sylvanus ult to make this ult knockup them for a millenium!