Laning phase
Fafnirs early is not as good as his late game
You will become very tanky (for early game) at 1000 gold, thenyou can risk a invade or even engage
I upgrade Underhand Tactics first because it has the same damage as
Cursed Strength, is easier to hit and has a disarm
You will need to balance using your
1 to clear wave or saving it for the stun and slow
Avoid engaging with your hammer because
Fafnirs cooldowns are high
Don't upgrade
Coerce until level
6 unless you need it for the heal.
Fafnir is one of the only supports that does not have to back early due to his
30 Protections at 1000 gold, which is easy to reach
Mid game ganking
Rotate with the jungler, mid to late support tends to rotate around with jungle and mid, keeping gold fury control and clearing camps.
Don't waste your ultimate, fafnir's ultimate has so much utility. Unfortunately this means that the enemy team are going to attempt to force or bait the ult. One thing that is fun and wrecks teams is using his ultimate as a engage, say for example you dash in, try to stun a character with escape and then ult. This will mitigate all damage during the transformation and most importantly will force the stunned god to use his escape, this allows for your team to either go on a full aggression or one thing that I like to do is to have the jungler destroy the character that was stunned.
Using your jump to agres is not always the best option, this leaves you vulnerable and also you just used the disarm. This may cost you ult or even a fast trip back to the fountain.
Fafnirs [Cursed Strength] has a pretty high cooldown,
This is true. In early-mid game knowing when to use the hammer is vital, it can be a valuable tool to clear, stop people from retreating and even engaging, this is why you should know its cooldown.
Late Game
At this point you need to level
Coercefor the
ADC
I recommend building
Shogun's Kusari, even though it is expensive Fafnirs
Pasive allows it and the [ì]25 % attack speed[/i] stacks with his
Coerce
Use Dragonic Corruption for objective secure, zoning and even to push
towers/phoenix
What boots do I get
Depends on the enemy Team composition. Say for example if you have burst gods with
tick damage then get
Reinforced Shoes. If you plan to live in the jungle and
gank every lane at once then Travelers Shoes are your go to item, combined with
Winged Blade this gives you insane rotational power and kill potential.
Hope this helps :)