Just thought of this. The tinkers song. Rand could sing to the trees make them grow like ogeir. Perhaps that was the so called dark ones power but no one accessed it, in this the fourth age, since the age of legends, because saidin was tainted, allowing Ishamael (perhaps a past life of Rand) to make lews therrin kill his family.  That left saidin tainted and the “song” lost. After Rand choked min Rand used the dark ones power to break the ter angreal he went to dragon mount and blinded the dark one or something he didn’t hide anyway after. So after that he again found the song the tinkers were searching for.  

Try not to judge because of spelling. I’ll admit my love of these stories are from audio books. Kate Reading and Michael Kramer rock. 

Rand, lews Therrin Telamon, Ishamael?

the land is one with the dragon, the dragon is one with the land. I believe they are a three part soul, the dark one was created when lews therrin was corrupted, the forsaken bound, and shaoul ghoul created. Ishamael is his (lews therrin) madness manifest which caused bealzamum to search out his other ,better part, of his soul(Rand). When shadar logath  was destroyed and the source cleansed the last battle truly started between his true selves. 

Sorry way off topic. 

Arangar and osangar were punished by the dark one. Ishamael/bealzemum/Moridin (just a theory) are the one time the dragon went to the DO. I believe lews therrin had a three part soul that’s why when in shaoul ghoul when their bael fire crossed they were connected. They were already connected as opposites, but lews therrins soul was corrupted causing an imbalance towards the dark one. The land is one with the dragon, the dragon is one with the land. The dragon is the true seal on the dark ones prison and there is proof it was broken by the bore and mashidar. Sorry bout spelling.