Death Fire Touch or Thunderlords on fiddlesticks?
^
^
DFT for higher damage numbers, TLD for higher burst. But, you're fiddle and you're niche isn't burst so I'd go for DFT. It'll be -really- nice if you pull off an nice team wide ult. Build liandry's too and enjoy looking at your damage done numbers post match.
Deathfire, cause you're sustained damage not burst.
If you check champion.gg he has a much higher win rate with TL. It might be that TL+5%CDR is better than DFT+7% penetration rather than just TL>DFT.
The win rate with Thunderlords is only 5% higher, being at 58% compared to the 53.3% of Deathfire and that's because of sample size. Thunderlords, while having a 5% higher win rate, only has around 130 games where it was used, compared to the 812 games with Deathfire touch. Deathfire Touch has 6 times as many games than Thunderlords for the amount of games taken for these statistics, so that is a big factor in why Thunderlords may have a higher win rate than Deathfire.
It's like me playing one game on Zed in ranked, winning it, and calling myself the best Zed player in the world because I have a 100% win rate with him in ranked.
Storm raiders surge.
no you get windspeakers blessing! duh
Fire
Thunderlords, in my opinion. You're not laning, so you don't need the consistent damage-over-time against enemies. You'll use the instant burst, longer cooldown keystone mastery to increase kill potential.
Stormraider's Surge can be useful for staying on squishy targets with your ultimate.
It's really weird, but NB3 ran Strength of the Ages on Fiddlesticks vs. Fizz, since the HP you gain from SotA outscales the damage from TLD pretty hard. You still do good damage without an offensive keystone too, plus there are a lot of useful masteries in the utility tree (reduced flash CD, for example)