Can put a torch on the back of the saddle as a skin: open inventory, select the torch, drag it on the megatherium saddle that is in the PLAYER's inventory, equip the saddle to your megatherium and enjoy the light !

Don't need to equip your torch for the darkness anymore. Equip any weapon on the back of your megatherium and still have some light now!

But the torch stills losing durability.

Hopefully that can help you!

ps: I don't speak English very well sorry if there is a few mistakes...

this and bp can be obtained from yellow cave drops. not sure if dropped in ragnarok ice cave drops and desert drops. genesis 2 missions might be easiest way. if anyone knows good ways to obtain bps of this share.