In the latest version of optifine there is a option to have client side lighting from torches in hand and flaming mobs etc. Would that be considered an unfair advantage or would it be fine to use that?

Thanks in advance:
Ardoasms

It's the same that some shader mods have. It is permitted.

It's a feature I wish was in vanilla Minecraft, especially with duel wielding.

@Blackened_Dawn It's the same that some shader mods have. It is permitted.

thanks for letting me know

Speaking of Optfine: I need to get the 1.10 one

Yeah that feature is super handy, waiting on 1.10 optifine, i miss dynamic lighting :(

Optifine 1.10 is already out. Just go to the download page and above the latest versions you can click "preview versions" and there you can download the 1.10 optifine.